Facies (Lonit te hanc topored ) 95 stop (3) Thin Section Sample Descriptions Sample Number 1. Formation Wills Creek Age of Fm. Silurian Location (where sample collected) and Date Highland County, VA Sep 22, 2018 Name of Collector Abdulaziz Adawi Grain Size/Range Grains mean size 0.1 mm range of sizes 0.01 mm 0.15 mm estimated percentage of rock_22 Matrix estimated percentage of rock 97% Grain size distribution (is there a pattern, bedding, lamination, concentrations) . Drawing of thin section (low power) Minerals and estimated percentages 1 Calcite Mud 97% 2 Qtz 2% 3 others 17 Cements Calcite Sorting Roundness: well rounded → rounded subrounded) subangular → angular euhedral → subhedral → andhedral Sphericity_high-low sphericity (atz) Grain-to-grain contacts Fossils and estimated percentages It has sort of crenkly limination with a lot of littel pore spaces that probbly from gas bubble. however, It almost called birdeges structure. Sedimentary structures Lamination - we can see all this flame structure at the botton that lookes like white bumps, dots, and speckles all the way through it and then there is dark layer, then there are light gray.enlight brown Color Light Olive Brown then another darle lyere efe. Rock Type (Dunham classification) mudstone modstand Dunham limestone classification scheme Algal laminated Stamata litic depositional texture recognizable depositional texture not recognizable original components not bound together during deposition original components bound together during deposition contains mud (particles of clay and fine silt size) mud-supported grain-supported lacks mud and is grain-supported 10% grains crystalline carbonate boundstone mudstone grainstone wackestone packstone facies very Other Remarks you light Olive Brown laminated mud stare with 27 Grains, range sized from 0.02mm - 0.15mm, estimated Percentage of cements is about 97%. Contiane 97% of Colcite as fire brownish mud and white cements. here is also 2% of subrounded mid spericity atz. clotted layers tareas with cleme structures Birdsere or stromatactis strature Alternating layers of fine mjerite with Facies 2- (peloidollostrocod/colitic grainston ) Thin Section Sample Descriptions Sample Number 2 Formation _Tonoloway Age of Fm. Silurian Location (where sample collected) and Date Highland Conty, VA Sep 22, 2012 (stop) Name of Collector Abdulaziz Adami Grain Size/Range fine grain store Coarse grainstong wack store ostracada pack shou Grains mean size (-Q1 -0.03 mm 10.03 -0.1 0.35 mm range of sizes 80%-85% estimated percentage of rock estimated percentage of rock Grain size distribution (is there a pattern, bedding, lamination, concentrations) Matrix Minerals and estimated percentages y Calite 98% 2 Qrtz 22 Drawing of thin section (low power) 3 Cements Calcite 15-20% ochrack Sorting Very will sorted land orignized) Roundness: well rounded → rounded → subrounded → subangular → angular euhedral → subhedral andhedral Coarse Sphericity Grain-to-grain contacts & fine Fossils and estimated percentages Deloids - with some coatings Ostracales, Mollusks) Echinoderm fragments forams Sedimentary structures graded bed, Lamintions - fine grainstone - Color Light Olive Gray Ostracode packstone - Rock Type (Dunham classification) grain stene coarser grainstorse? sharplase ? Dunham limestone classification scheme depositional texture recognizable depositional texture not recognizable original components not bound together during deposition original components bound together during deposition contains mud (particles of clay and fine silt size) mud-supported grain-supported lacks mud and is grain-supported 10% grains crystalline carbonate mudstone wackestone packstone boundstone 151 Other Remarks grainstone Facies s Light Oline Gray beded grain stone, that have 3 faces, fine grainstre part, coarse grainstones and wack stone ostrocode Packstone parts. there estimated percentages of 98% Cakite with 2% a Qrte. ther rock shores very will sorted and well rounded Peloids with some coatings, also the rock contane fossils Facies 3 ( Laminated to graded Peloidol brachiopod ostraced packstone 3 Thin Section Sample Descriptions Sample Number_3 Formation Tonoloway Age of Fm. Silurian Location (where sample collected) and Date Highland County, VA Sep 22, 2019 Istop #3) Name of Collector Abdulaziz Adawl Grain Size/Range mean size_001 may Course fossil brachiopods range of sizes 0.01mm . CiTrim to med gogined peleda estimated percentage of rock 7FZ estimated percentage of rock_25% Grain size distribution (is there a pattern, bedding, lamination, concentrations) Grains Matrix Drawing of thin section Minerals and estimated percentages 1 Calcite 98% 2 Qt. (low power) 3 Cements _Calcite 163 Sorting_mid Roundness: well rounded rounded → subrounded → subangular — angular euhedral → subhedral → andhedral Sphericity high Grain-to-grain contacts Fossils and estimated percentages There are mine Sedimentary structures Lomination / Grading Obstra cales, brachiopods peloida Color Brilliant Green ated, Mackestorul Rock Type (Dunham classification) bowerstone Wit Sonepac, como Kaci TEST Dunham limestone classification scheme depositional texture recognizable depositional texture not recognizable original components not bound together during deposition original components bound together during deposition contains mud (particles of clay and fine silt size) mud-supported grain-supported lacks mud and is grain-supported 10% grains crystalline carbonate mudstone wackestone packstone grainstone boundstone Other Remarks نهر and Light Olive gray peloidal brachiopod wackostove, packsteine Alternating Layers w poloids Brachst ostrecoday that very Assignment Write a 10 page report that is about your formation from the field trip. Seek out and include information about how sedimentation was greatly influenced by tectonic activity or sea level change. This report will be a survey of the literature and a focus on your formation and the influences of tectonics and sea level change on sedimentation and stratigraphy. You will include the descriptions and documentation on the samples you collected. You will describe your samples as different facies that represent different subenvironments or parts of facies successions in your formation and explain how they fit in. Your main thesis will be that your formation is primarily a (you name the environment) environment with several facies and is the result of the tectonic and or sea level history that you describe. Library research Peer reviewed primary sources The following and more, but check with Dave. Journal of Sedimentary Research (Journal of Sedimentary Petrology), Sedimentology, Palaios, Journal of Paleontology, Palaeontology, Lethaia, Palaeo Palaeo Palaeo, American Association of Petroleum Geologists Bulletin, Geological Society of America Bulletin, Geology, USGS Bulletin, USGS Professional Paper, Journal of Geology, Nature, Science, Biogeology, Memoirs of the Geological Society of America, And Much Much More GeoRef - Your main source for information on geological articles. A comprehensive database of everything ever published in geology. Available through OhioLink. Replaces Bibliographic Index of Geology – monthly lists of publications Internet research – You may use the internet as a method to track down data, but peer reviewed publications including published journals, field guides, memoirs of societies, books, and other official publications of geological societies, schools, and government surveys. Websites ARE NOT valid sources. Imagine picking up a loose scrap of paper hand-written on a table at Izzy's and using it to defend the thesis. References should use the format in Geology, GSA Bulletin, USGS Bulletin, or Journal of Paleontology Author, Date, Title: Journal, volume, number, pages Citations within text (Author, date) or ...as noted by Author (date) General Outline Introduction Just this part More detailed outline Introduction First part of Intro: General Geological Background Formation and age Basin Setting (Include map) General stratigraphy (Include stratigraphic column) Geologic History of Basin with special focus on time period of interest, include 1 Paleogeographic map. Second part of Intro: Previous Work on Formation, Environments and Facies Formation specifics, rock types, thickness trends, extent, etc... Tectonic history Formation description from literature Sediments and facies Paleontology Stratigraphic trends and correlations Environnmental interpretation and Facies associations Diagenesis if applicable Methods 72 to 1 page – went to field, photographed outcrop, determined different lithologies, made thin sections (how), described using standard petrographic techniques, used Dunham or Pettijohn for classification etc... Data: Description of three samples – put data sheets in back, not included in 10 pages. Location, Rock Types, give range of rock types Describe samples collected Description of outcrop Description of thin sections Interpretations Three facies from thin sections How they fit into previously published Environment of Deposition In what way did tectonics influence sedimentation Paleoclimatic and paleogeographic implications Other Discussion, diagenesis, fossils... Conclusions What are the main take home points What big problem did you solve and give the implications Why should we care References In appropriate format that match citations in text