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Sandstone
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221	ated surfaces suggest deposition from wet-based terrestrial glaciers. Black shales of the overlying Mackellar Formation are in sharp contact with diamictite and sandstone of the Pagoda Formation. Lonestones are extremely Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 17:37:20 Mesozoic Permian Supercontinents Transantarctic Mountains Antarctica Cimmerian Plate West Antarctic Rift Gondwana East Antarctic craton Geology Physical geography Historical geology
222	a vitric tuff (Barrett, 1969) and by tuffaceous claystone, which is common in the middle and upper , members of the formation. The composition of the Fremouw sandstone varies both vertically and laterally, reflecting cha Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 03:36:53 Geology Dufek Coast Fremouw Formation Paleozoology Lystrosaurus Dicynodon Triassic Lystrosauridae Synapsid Dicynodonts Physical geography Geologic formations
223	types—slate, siltstone, sandstone, and dacite—but not on the coarse-grained intrusive rocks abundant in this area. These intrusive rocks appear to be so readily grussified that polish or striations, if originally pre Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 03:38:11 Glacier Ice sheet Antarctica Pensacola Mountains Dufek Massif Transantarctic Mountains Davis Valley Glacial erratic Ice shelf Physical geography Glaciology Ice age
224	Cooper, R. A., J . B. Jago, A. J . Rowell, and P. Braddock. In press. Age and correlation of the Cambrian—Ordovician Bowers Supergroup, northern Victoria Land. In R. L. Oliver, J. B. Jago, and P. R. James (Eds.), Antar Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 05:05:54 Stratigraphy Beacon sandstone Fremouw Formation Triassic Permian Antarctica Glossopteris Geology Physical geography Geologic formations
225	have a cluster level of +0.91. The association of the minor elements scandium, vanadium, and cobalt with the major element iron in rock-forming minerals is well known. There were regular latitudinal differences in elemen Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 18:01:59 Sedimentary rocks Clastic rock Sedimentology Sandstone Granite Volcanic rock Petrology Geology Igneous petrology
226	The wood impressions, the occurrence of fossilized logs up to 40 centimeters in diameter, and the presence of tree stumps caught up in the flows (Barrett, Elliot, and Lindsay 1986), all point to a climate suitable for th Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 07:03:36 Geologic formations Sedimentology Clastic rock Palynology Antarctica Transantarctic Mountains Soil Beacon sandstone Geology Physical geography Paleontology
227	silts tone/mudstone and interbedded fine-grained sandstone. Internally, the coarser sandstone units consist of scour-bounded cosets of 0.2- to 0.5-meter thick trough cross-beds. In some cases, thin siltstone drapes have Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 18:12:12 Ross Dependency Dufek Coast Geologic formations Fremouw Formation Transantarctic Mountains Beardmore Glacier Mount Bowers Antarctica Wahl Glacier Geography of Antarctica Shackleton Coast Physical geography
228	Orthoquartzite (Farnell, West Beacon, and Brawhm Sandstones), Arena Sandstone, Altar Mountain Formation (including Ashtray Sandstone Member), New Mountain Sandstone (Terra Cotta Siltstone and Windy Gully Sandstone member Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 06:14:48 Sedimentology Sulfate minerals Dufek Coast Fremouw Formation Gypsum Dune Sandstone Sediment Kennar Valley Geology Petrology Sedimentary rocks
229	poorly sorted massive sandstones of unit 4 abruptly truncate unit 3. The coquinas consist of large disarticulated Pecten, Ostrea, broken echinoids, and whale bones. The fine-grained sandstone and mudstone of unit 5 entom Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 05:14:56 Antarctica Physical geography Triassic Jurassic
230	canic detritus, derived from a caic-alkaline arc along the paleoPacific margin, became the principal component in sandstone. This change from cratonic to orogenic provenance was the result of a shift in the basin axis to Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 07:07:21 Geologic formations Petrology Sedimentary rock Turbidite Beardmore Glacier Transantarctic Mountains Beacon sandstone Geology Geography of Antarctica Dufek Coast

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