Skeletal packstone

(C) Mud-rich packstone that is rich in deformed micritized allochems; note that partial early calcite cementation has preserved some peloids from being deformed locally (D) A cross plot of core plug porosity (%) and permeability (mD) of different limestone textures, data comes from the Arab and Kharaib formations (this study) and Thamama ...

Fragmented and abraded skeletal wackestone to packstone (MS3)4.1.3.1. Description. Facies MS3 is composed of ≤1.5-m-thick beds of wackestone to packstone that are primarily composed of fragmented and variably abraded (angular to sub-rounded) skeletal grains ranging from silt- to granule-size (Fig. 6 C). Individual beds preserve a …Download scientific diagram | Reservoir lithofacies type 11: Skeletal, peloidal packstone (SPP). Thin-section photomicrograph displays a grain-rich packstone texture with abundant preserved ...252. I tried to make caves more effective and here is the most basic level of the skulls on stones pack. If you have any idea that improves Vanilla feeling, feel free to …Condensed skeletal packstone with a transversal cross section of gastropod (with geopetal filling) coated by Archaeolithophyllum lamellosum. Pennsylvanian, Asturias, N Spain, cf. Bahamonde et al. (2015, 2017) HIDE INFO. SHOW INFO. 4. Palaeozoic red algae . Skeletal packstone with growth of possible red alga Fasciella and green algae beresellidsThe following rock sample shows a transitional set of graded beds showing a lower packstone type bed with larger skeletal pieces and a fine-grained matrix. This is overlain by a coarser-grained, skeletal grainstone which shows a higher degree of sorting and physical breakage. Lithofacies A: Skeletal packstone/wackestone . 184 Mahboubi, A., et al., IIJS, 5 (Geol.), 2004 This lithofacies is brown-grey and medium to thin bedded in the field. In thin section it shows abundant fine to medium-grained skeletal debris including bryozoans, brachiopods and echinoderms that are ...data for the skeletal grainstone and packstone rock-fabric facies of HFC2 for the G-3679 test corehole. Slabbed core sample (B) is from a depth of approximately 28.11 to 28.48 feet below land surface The thin section photomicrograph (C) is from a depth of 28.3 feet below land surface. Skeletal grainstone and packstone rock-fabric faciesJan 12, 2019 · Deskripsi megaskopis dan sayatan tipis menunjukan fasies yang terdiri dari Skeletal Packstone, Red Algae Packstone, Foram Packstone , dan Boundstone dengan lingkungan diagenesa mulai dari Mixing ...

The skeletal grainstone/packstone lithofacies (lithofacies 4) is composed of very fine skeletal grains with many peloidal grains and some very-fine quartz and fine ooid grains (figure 5). This lithofacies is greenish to dark yellowish-brown color, and contains variable amounts of relatively unabraded skeletal fragments.Download scientific diagram | Normal marine subtidal facies: (a) smaller foraminiferal packstone-grainstone (BD), Korobcheevo Formation, Podolsk; (b, c) skeletal packstones-rudstones (D1): (b ...The Salem Limestone (Valmeyeran) is represented in Monroe and northern Lawrence Counties, Indiana, by a complex assemblage of bioclastic packstone-grainstones capped by dolomitic rocks. Modal analysis indicates intervals where porosity exceeds 20%. However, the evolution of this porosity is not well documented.Type of skeletal and non-skeletal grains, grain size and their frequency ... packstone, Operculina bioclast packstone and Lepidocyclina bioclast packstone.Ooidal packstone with micritized ooids resedimented in basinal setting including angular carbonate lithoclast of peloidal grainstone to packstone likely deriving from older shallow-water carbonate facies. ... Lithoclasts . Skeletal grainstone with crinoids and fragments of bryozoans with a lithoclast of undetermined composition containing red ...

They are 5-10 m thick and consist of nodular, very fine to medium grained, skeletal fragment packstone-wackes- tone (with scattered large forams) and rarely mudstone, capped by larger foram ...... skeletal material. The latter group are called boundstones (similar to ... If the rock is grain supported, it is called a packstone, if the grains have ...data for the skeletal grainstone and packstone rock-fabric facies of HFC2 for the G-3679 test corehole. Slabbed core sample (B) is from a depth of approximately 28.11 to 28.48 feet below land surface The thin section photomicrograph (C) is from a depth of 28.3 feet below land surface. Skeletal grainstone and packstone rock-fabric faciesHasil analisa fasies yang ada pada daerah penelitian adalah terdapat 5 fasies,yaitu; Skeletal Debris Packstone – Wackestone, Coral Algal Grainstone - Boundstone,Skeletal Wackestone, Skeletal Packstone dan Coral Algal Packstone. Fosil yangterdapat pada daerah penelitian ini di dominasi oleh coral, red algae, molusca,bryozoans, bivalve ...

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Jun 1, 2023 · Skeletal peloidal packstone (F8) includes bivalves, gastropods, foraminifera (aulotortids, duostominids, textulariids, Triasina hantkeni), and dasyclad algae (Fig. 6H). Bioturbated packstone with moulds of ooids with peloids as nuclei characterises lithofacies F9 (Fig. 7 A). Skeletal wackestone to packstone with a specimen of the foraminifer Tuberitina (bottom left) encrusting an echinoid spine from Pennsylvanian lagoonal facies from North Spain (Escalada Formation). Pennsylvanian, Asturias, N Spain, cf. Bahamonde et al. (2015, 2017)TSTs of Sequences Md 1 to 5 downdip are carbonate-prone, with parasequence sets becoming progressively more open-marine upward from peloid …Sample L is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate. Search for 6 14 20S 29 30 58E and zoom out to an eye altitude of ~600 miles. What type of sedimentary environment is this? a. Lacustrine b. Fluvial c. Eolian d. GlacialPeloidal–skeletal packstone to grainstone (L1) was deposited before the onset of the mud mound complex in a moderate-energy, subtidal, open-marine inner-ramp setting, as suggested by the abundance of peloids, bioclasts, and endothyrid foraminifers (Gallagher 1988; Della Porta et al. 2005).Foraminiferal algal packstone (Fig. 6a): skeletal grains are the main allochems and include benthic foraminiferal tests (10–20%) and platy and circular algal grains (60–80%) embedded in a micritic to microsparitic cement. 4.

skeletal翻译：骨骼的;骨瘦如柴的, 轮廓的，最基本的，大概的。了解更多。 AP-III is a dark-gray spatially discontinuous skeletal grainstone to packstone that laterally grades into a skeletal packstone to wackestone. It locally developed overhangs, rips-ups, and hardground on its upper surface.Most parasequences are made up of basal skeletal-peloid wackestone-packstone that grades up into a thick skeletal packstone-grainstone (Fig. 9 F), capped by a thin microbial or fenestral laminite. The parasequences in the 300-m-thick Oxfordian-basal Kimmeridgian part of the DJ section are dominated by mud-supported facies and vary widely in ...Units of dark grey, irregularly bedded skeletal packstones with shaly partings are developed at intervals. Thin unit of calcareous sandstone and sandy skeletal packstone [Pant Mawr Sandstone Member and Honeycombed Sandstone Member] at base in the Vale of Glamorgan and northwest crop of the South Wales Coalfield respectively.The following rock sample shows a transitional set of graded beds showing a lower packstone type bed with larger skeletal pieces and a fine-grained matrix. This is overlain by a coarser-grained, skeletal grainstone which shows a higher degree of sorting and physical breakage. Skeletal Grain types Red Algae 1. Ungdarellid Skeletal packstone to rudstone containing a crinoid ossicle on the left with micritic oncoidal coating and fragments of the red alga …d. Crystal precipitation during the evaporation of water, such as in a drying lake bed. 13. Sample G is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate 14. Sample H is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate 15. Skeletal-peloidal wackestone, wacke-packstone, and packstone facies characterize this environment succession. A low-diversity fauna of benthic foraminifera, including miliolids, thin-shelled bivalves, and rare fragmental rudists and green algae characterize the lagoonal environment ( Schlager, 2005 ) with a low-to-moderate energy …These skeletal packstone and grainstone/rudstone strata onlap the Alpine bedrock (Fig. 3, Fig. 4, Fig. 5) in the northern, south-western and south-eastern parts of the Finale Ligure Limestone area or overlie lithofacies L2, L3 and L4 through erosional and angular unconformities or lithofacies L5-L7 through sharp erosional contacts (Fig. 6).

The dolomite facies is interbedded with the anhydrite, peloid grainstone/packstone, and skeletal packstone/ wackestone facies (fig. 4). In addition, underlying Salem carbonates are commonly dolomitic. Figure 8--Dolomite faciess from the lower St. Louis in the Mobil #1 Foster. Parallel laminae are partially to totally disrupted by burrows. 6,808 ...

The Vau-Rocha succession of Lagos-Portimão Formation includes three main facies: Mollusc-rich rudstone in a matrix of skeletal pack-grainstone (MR), fine to medium, skeletal pack-grainstones (SPG), and quartz-rich skeletal packstones (QSP), distinguished by texture, microfacies, sedimentary structures and relative percentages of skeletal ...The Principle of Uniformitarianism gives confidence in selecting well sites through looking at Holocene facies analogues. The Principle of Uniformitarianism states that the causes and rates of geologic processes that are in operation today are the same as those that existed in the geologic past. Reefs behave the same today as they did in the...Reservoir lithofacies type 11: Skeletal, peloidal packstone (SPP).... | Download Scientific Diagram. Figure 17 - uploaded by Volker Christian Vahrenkamp. Content may be subject to copyright ... lightly cemented, skeletal grainstone and packstone (UPSC). The carbonate surface was etched into relief, coated with manganese oxides, and veneered by late Paleocene to late Eocene pelagic ...Skeletal grains: It was found by examining the thin sections that the wells in the Yamama Formation contained a percentage of skeletal grains, which include calcareous algae, some larger benthonic ...Sample J is: 6. Sock Bypst b. chert c. mudstone/shale e. skeletal packstone/coguins f. conglomerate f. conglomerate 17. Sample K is: a. rock gy b. chert b. chert d. quartz sandstone c. skeletal packste 18. Sample L is: a. rock Bypsum b. chert c. mudstone/shalo d. quartz sandstone e. skeletal packstone/coquins f. conglomerato 19.The DES gene provides instructions for making a protein called desmin. Learn about this gene and related health conditions. The DES gene provides instructions for making a protein called desmin. Desmin is found in heart (cardiac) muscle and...Apr 25, 2023 · Peloidal–skeletal packstone to grainstone (L1) was deposited before the onset of the mud mound complex in a moderate-energy, subtidal, open-marine inner-ramp setting, as suggested by the abundance of peloids, bioclasts, and endothyrid foraminifers (Gallagher 1988; Della Porta et al. 2005). AP-III is a dark-gray spatially discontinuous skeletal grainstone to packstone that laterally grades into a skeletal packstone to wackestone. It locally developed overhangs, rips-ups, and hardground on its upper surface.Pelletoid-skeletal packstone/wackestone and pelletoid-oolite-skeletal packstone/grainstone facies of the composite subtidal, marine environments were concentrated in the southern half of the field where grainstone deposition was linked to a paleotopographic high. Deposition in the northern half of the field was dominated by the …

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Nov 29, 2018 · Many skeletal packstone/wackestone intervals are overlain by oolitic grainstone/packstone. The skeletal packstone/wackestone facies is also intercalated with the dolomite, anhydrite, and peloid grainstone/packstone facies of the St. Louis Limestone, and the quartzose grainstone of the Ste. Genevieve Limestone (fig. 6). Interpretation Sample L is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate. Search for 6 14 20S 29 30 58E and zoom out to an eye altitude of ~600 miles. What type of sedimentary environment is this? a. Lacustrine b. Fluvial c. Eolian d. GlacialThese facies are similar to large benthonic foraminiferal lime-wacke to lime-packstones biofacies, but can be distinguished due to the largely limited skeletal ...This microfacies has peloidal skeletal packstone to grainstone rudist attitudes, and floatstone and rudstone are considered the shoal environment facies. The grains are moderately sorted to well-sorted. The bioclasts of the shoal environments are bivalves, intraclasts, corals, green algae, echinoderms, and rudist shells.Skeletal wackestone to packstone with a specimen of the foraminifer Tuberitina (bottom left) encrusting an echinoid spine from Pennsylvanian lagoonal facies from North Spain (Escalada Formation). Pennsylvanian, Asturias, N Spain, cf. Bahamonde et al. (2015, 2017)From its base upsection, the formation is mostly subtidal in origin and emergent at its top, and consists of (1) deeper water carbonates, (2) major cycles of open shallow-marine mudstones grading up into skeletal packstone or rainstone, (3) minor cycles of dolomitized transitional open to restricted marine mudstone grading up into skeletal ... Peloidal–skeletal packstone to grainstone (L1) was deposited before the onset of the mud mound complex in a moderate-energy, subtidal, open-marine inner-ramp setting, as suggested by the abundance of peloids, bioclasts, and endothyrid foraminifers (Gallagher 1988; Della Porta et al. 2005).Carbonate reservoir geology. Carbonate sediments are commonly formed in shallow, warm oceans either by direct precipitation out of seawater or by biological extraction of calcium carbonate from seawater to form skeletal material. The result is sediment composed of particles with a wide range of sizes and shapes mixed together to form a ...The dolomitic part of K1 is characterized to be mudstone, mudstone to packstone, beige, moderately hard to hard, crystalline to cryptocrystalline, have occasional pelloids, pebbles and shell fragments, have local mudcracks in mudstone, slightly argillaceous in parts, have thin layers of anhydrite and o have good to fair vuggy and ...e. skeletal packstone/coquina f. conglomerate 15. Sample I is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate 16. Sample J is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate 17. Sample K is: a. rock gypsum b. chert c ...Jan 12, 2019 · Deskripsi megaskopis dan sayatan tipis menunjukan fasies yang terdiri dari Skeletal Packstone, Red Algae Packstone, Foram Packstone , dan Boundstone dengan lingkungan diagenesa mulai dari Mixing ... ….

Embry and Klovan modification of the Dunham’s (1962) biologic classification of organically bound rocks.“Floatstone” replaces Dunham’s “packstone”; the term “rudstone” replaces grain-supported biogenic limestones, and other organically bound rock are termed “bafflestone,” “bindstone,” or “framestone,” depending on the character of the organic …Reservoir lithofacies type 11: Skeletal, peloidal packstone (SPP). Thin-section photomicrograph displays a grain-rich packstone texture with abundant preserved intraparticle pores ( eg . in...Iraqi Geological Journal Myzban et al. 2022, 55 (2C), 93-105 95 2. Geological Setting and Stratigraphy The Sa’adi Formation is a part of the Santonian-Campanian cycle that belongs to the mega ...skeletal packstone, with ostracods and brachiopods, wavy contacts greenish, massive dolostone with irregular lenses of micrite fenestral, algae mudstone interbedded with thin beds of medium to thick bedded, massive, sandy, dolostones, fine …Skeletal wackestone to packstone with a specimen of the foraminifer Tuberitina (bottom left) encrusting an echinoid spine from Pennsylvanian lagoonal facies from North Spain (Escalada Formation). Pennsylvanian, Asturias, N Spain, cf. Bahamonde et al. (2015, 2017) They are 5–10 m thick and consist of nodular, very fine to medium grained, skeletal fragment packstone–wackestone (with scattered large forams) and rarely mudstone, capped by larger foram packstone–rudstone, or higher in the section, by shallow water, coarse to very coarse, skeletal fragment grainstone–packstone with sea grass …wackstone facies, skeletal packstone facies and skeletal wackstone-packstone coarse facies. The depositional environment at reef system that develops based on the type of facies and biota present in the study area is indicated to be deposited on the back of the reef lagoon and fore reef. Based on the results of the analysis of the depositionalLocally, the limestone is a packstone that consists, almost exclusively, of algae and smaller encrusting forams. In the northern part of the study area, in Hitchcock County, Nebraska, and locally over Cahoj Field, thin packstone and grainstone beds composed of mixed, fragmented skeletal grains are included in this lower interval.d. Crystal precipitation during the evaporation of water, such as in a drying lake bed. 13. Sample G is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate 14. Sample H is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate 15.Marginal lacustrine deposits include ooid and skeletal packstone-grainstone, siltstone, and sandstone. Distal lacustrine units are skeletal mudstone ... Skeletal packstone, Embry has modified Dunham's classification and Klovan (1971) to include coarse grained carbonate s (above figure). In their revised scheme, a wackestone in which the grains are greater than 2mm in size is termed a floatstone and a coarse grainstone is called a rudstone. Both terms are extremely useful in description of limestone s., 22.65–24.65 Lithofacies: Arenaceous skeletal packstone and grainstone Depositional texture: Arenaceous skeletal packstone and grainstone Color: Very pale orange (10YR 8/2) and grayish orange (10YR 7/4) Sedimentary structures/textures: Part of a very thickly bedded interval Ichnofabrics: Ichnofabric index 4–5. Thalassinidean and/or ..., The DES gene provides instructions for making a protein called desmin. Learn about this gene and related health conditions. The DES gene provides instructions for making a protein called desmin. Desmin is found in heart (cardiac) muscle and..., ... packstone (4) fossiliferous mudstone-wackestone, (5) laminated peloidal grainstone, (6) recrystallized skeletal packstone, (7) intraclastic conglomerate and ..., Scale bar 2 mm. c Gastropod-rich peloidal packstone intercalated in peloidal wackestone-mudstone with laminoid- and lenticular-shaped fenestrae, nearly parallel to bedding surface. JE 6-5. Scale bar 6 mm. d Bivalve-rich skeletal packstone with gastropods (g) and crinoids (c), set in a poorly sorted peloidal matrix with abundant tiny …, Download scientific diagram | Reservoir lithofacies type 11: Skeletal, peloidal packstone (SPP). Thin-section photomicrograph displays a grain-rich packstone texture with abundant preserved ..., skeletal packstone/grainstone (SPG), and quartz-rich skeletal packstone (QSP) ... skeletal packstone (QSP). These facies occur in different arrangements and ..., 22.65–24.65 Lithofacies: Arenaceous skeletal packstone and grainstone Depositional texture: Arenaceous skeletal packstone and grainstone Color: Very pale orange (10YR 8/2) and grayish orange (10YR 7/4) Sedimentary structures/textures: Part of a very thickly bedded interval Ichnofabrics: Ichnofabric index 4–5. Thalassinidean and/or ... , skeletal翻譯：骨骼的;骨瘦如柴的, 輪廓的，最基本的，大概的。了解更多。, A–Skeletal packstone with closely packed bioclasts, mostly fenestellid bryozoans (F) and crinoids (C) in sparry calcite cement, Ballymore Limestone Formation, Corancarton Borehole (GSI-11-315), 256.5 m; B–Spiculitic wackestone, with monaxon calcitic spicules and ostracods in lime mud matrix, Ballymore Limestone Formation, …, d. Crystal precipitation during the evaporation of water, such as in a drying lake bed. 13. Sample G is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate 14. Sample H is: a. rock gypsum b. chert c. mudstone/shale d. quartz sandstone e. skeletal packstone/coquina f. conglomerate 15., secara lateral dengan sisipan serpih atau batulempung. Dua litologi yang umum yaitu pelloid skeletal packstone pada bagian bawah, dan pada bagian atas didominasi skeletal wackestone dan packstone. Gambar 2. Korelasi sumur daerah penelitian 3.2. Karakterisasi Resevoir Karbonat Formasi Tuban 3.2.1. Analisis Litofasies, The samples from the Hoitberg reef are boundstone to packstone lithologies with the tabulate Eocatenipora vormsiense Klaamann, as the main skeletal component and abundant fragments of bryozoans and ostracod shells as secondary skeletal components (Fig. 8e–f). The matrix of the boundstone consists of a mudstone-wackestone lithology with a ..., Abstract. During the past three years the attention of Rocky Mountain operators has been focused on Permian-Pennsylvanian reservoirs in the Nebraska Panhandle. Relatively inexpensive drilling, a good wildcat success ratio, and impressive oil production have made the Northern Denver one of the most active areas in the Rockies during the current ..., Skeletal remains were discovered in deposits made at the mid-ramp, peloids, Skeletal remains were found in mid-ramp deposits, peloids, Wackestone, and wacke-packstone. The proximal h alf of the mid-, The base of the overlying Chote č Limestone begins in the costatus Zone and is characterized by a ~1 m-thick interval of dark, graded peloidal – skeletal grainstone – packstone (turbidites ..., algal and skeletal wackestone, interbedded with a medium bed of skeletal-peloidal packstone tabular, thin- to medium-bedded, algal, peloidal, intraclastic, fenestral, dolomitic medium to thick bedded, massive, sandy, dolostones, fine-grained mnr intraclasts levels , In oil and gas industry, classifying carbonate rocks is a major step in core and thin section description. Two classification systems have been widely used in the industry: Folk (1959,1962) Classification. Dunham (1962) Classification. Both classifications provide an indication of depositional energy setting and reservoir quality., Reservoir lithofacies type 11: Skeletal, peloidal packstone (SPP). Thin-section photomicrograph displays a grain-rich packstone texture with abundant preserved intraparticle pores ( eg . in..., However, the adjacent oolite-skeletal packstone facies biota in Arkansas and Louisiana than they do in Alabama and is nonproductive. Secondary moldic porosity in the oolite- Florida. skeletal grainstone facies is the basic porosity Vf^ and Smackover reefs in Alabama and Florida were constructed averages 13% in the producing horizon., They are labeled G-L and these are my options 1. rock gypsum2.chert 3. mudstone/shale4.quartz sandstone5.skeletal packstone/coquina6.conglomerate. I need help identifying these sedmintary rocks. They are labeled G-L and these are my options. 1. rock gypsum. 2.chert. , Deskripsi megaskopis dan sayatan tipis menunjukan fasies yang terdiri dari Skeletal Packstone, Red Algae Packstone, Foram Packstone , dan Boundstone dengan lingkungan diagenesa mulai dari Mixing ..., Nov 7, 2017 · Burrowed skeletal peloidal wackestone–packstone (LFA 4) This LFA consists of dark grey massive muddy carbonates (mostly wackestone and packstone). Carbonate constituents are predominantly skeletal grains including foraminifera, echinoids spines and bivalves; most are completely dissolved and preserved as moulds. , Bioclastic crinoidal packstone. 658 views · 2 years ago ...more. Try YouTube Kids. An app made just for kids. Open app · Scienze della Terra - La Statale. 761., Skeletal and shelly debris, ranging from largely articulated to disarticulated, is common in the Dumugol reefs. The debris occurs commonly in bioclastic wackestone …, The first occurrence (FO) of H. parvus parvus in the lower Daye Formation, at about 7.45 m above the contact surface between the Upper Permian skeletal packstone and a calcimicrobial framestone ..., litic skeletal packstone and fine-grained spiculitic foraminifer wacke-stone. The section is punctuated by thin intervals of nannofossil ooze. One of these intervals is the objective of this report. The color of the sediments ranges from a buff light gray to a pale olive-green. They re-present continuous sedimentation at rates that sometimes ..., The Mission Canyon Formation is a regressive, shoaling-upward carbonate to anhydrite sequence deposited in a slowly shrinking epeiric sea. From its base upsection, the formation is mostly subtidal in origin and emergent at its top, and consists of (1) deeper water carbonates, (2) major cycles of open shallow-marine mudstones grading up into skeletal packstone or rainstone, (3) minor cycles of ..., 1. Packstone. Grain-supported; carbonate mud matrix between skeletal grains (dasyclad algae, benthic foraminifers, bivalves) in interparticle pore space. Thin section kindly provided by T. Geel, Vrije Universiteit, Amsterdam. HIDE INFO., 22.65–24.65 Lithofacies: Arenaceous skeletal packstone and grainstone Depositional texture: Arenaceous skeletal packstone and grainstone Color: Very pale orange (10YR 8/2) and grayish orange (10YR 7/4) Sedimentary structures/textures: Part of a very thickly bedded interval Ichnofabrics: Ichnofabric index 4–5. Thalassinidean and/or ..., The proximal reef talus is represented by skeletal packstone and rudstone containing highly diverse bioclasts, with corals, crinoids, foraminifers, gastropods and bivalves, as well as large fragments of reworked coral colonies and some coral colonies in growth position. These beds show erosive surfaces and amalgamation of beds., Skeletal peloidal packstone with . bivalves, common f oraminifera . and gastropods and sparse dasy-clad algae. Poorly sorted, 30–500 μm to . 1 mm. Peloids Common mm-size bivalve and gastro-, Eighteen of the 90 wells drilled to date in this field have been cored. Microintercrystalline porosity is the most important reservoir porosity type; it is characterized by 1- to 15-{mu}-sized pores developed in the carbonate mud matrix of the wackestone and packstone lithofacies of shallowing-upward carbonate sequences.