1-20 OF 20 RESULTS FOR

Whiteout Conglomerate

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Series: GSA Memoirs
Published: 01 January 1992
DOI: 10.1130/MEM170-p37
... The upper Paleozoic Whiteout Conglomerate, situated conformably upon the Crashsite Group and overlain conformably by the Polarstar Formation, may represent the entire period of Gondwanaland glaciation in West Antarctica. The formation, mainly massive diamictites, makes up about 1,000 m...
Series: GSA Memoirs
Published: 01 January 1992
DOI: 10.1130/MEM170-p279
... A small collection of limestone clasts from the Whiteout Conglomerate (Permo-Carboniferous), Ellsworth Mountains, was examined for archaeocyathids and other fossils. Thirty or more poorly preserved archaeocyathid specimens are here referred to Ajacicyathus sp., Gordonicyathus sp...
Series: GSA Special Papers
Published: 01 January 1991
DOI: 10.1130/SPE261-p191
... Two thick sequences of ancient glacial and glacial marine rocks, the late Proterozoic Mineral Fork Formation of Utah and the Late Paleozoic Whiteout Conglomerate of West Antarctica, reflect similarities and differences in temperature regimes of the glacial delivery systems, climatic settings...
Journal Article
Journal: GSA Bulletin
Published: 14 July 2017
GSA Bulletin (2017) 129 (11-12): 1568-1584.
... detrital zircons were dated at ca. 480 Ma with major peaks at ca. 530 Ma and 500 Ma. Similar patterns are recorded in the Permian–Carboniferous Whiteout Conglomerate, with main components at ca. 650–500 Ma, and an absence of detrital zircons younger than Cambrian. The results, combined with stratigraphic...
FIGURES | View All (10)
Series: GSA Memoirs
Published: 01 January 1992
DOI: 10.1130/MEM170-p81
... Carbonate rocks were studied from the Middle Cambrian Drake Icefall Formation and the Middle to Upper Cambrian Minaret Formation. Additionally, carbonate clasts from the Middle Cambrian Union Glacier Formation and the Permo-Carboniferous Whiteout Conglomerate were examined. No in situ Lower...
Series: GSA Memoirs
Published: 01 January 1992
DOI: 10.1130/MEM170-p393
... The 5,500+-m Paleozoic succession of the Sentinel Range includes the Heritage Group (Cambrian), the Crashsite Group (Cambrian and younger, including Devonian), the Whiteout Conglomerate (Carboniferous?), and the Polarstar Formation (Permian). All these predominantly clastic rocks were strongly...
Series: GSA Memoirs
Published: 01 January 1992
DOI: 10.1130/MEM170-p1
... sedimentation. Deposition of the glaciomarine Permo-Carboniferous Whiteout Conglomerate and the Permian Polarstar Formation completed the sedimentary sequence. Major deformation of the Ellsworth Mountains sedimentary succession, the Ellsworth (Gondwanide) Orogeny, took place in Late Permian or early Mesozoic...
Series: GSA Memoirs
Published: 01 January 1992
DOI: 10.1130/MEM170-p63
... The Polarstar Formation, a 1-km-thick argillite and sandstone unit, is the uppermost part of a thick Cambrian to Permian sedimentary sequence in the Ellsworth Mountains. The formation gradationally overlies the Whiteout Conglomerate, an Upper Carboniferous-Lower Permian glacial diamictite...
Journal Article
Published: 24 October 2011
Geological Magazine (2011) 149 (4): 626-644.
..., at or shortly after the Carboniferous–Permian boundary. Conglomerates predominantly consist of quartzite and granite and contain boulders exceeding 500 mm in diameter. Zircons from granitoid clasts and a silicic volcanic clast yield U–Pb ages of 466 ± 3 Ma, 373 ± 5 Ma and 487 ± 4 Ma, respectively and have...
Image
Histograms of compiled data shown in  Figure 6B . Compilation was made only...
Published: 14 July 2017
indicates the number of rocks. Samples older than 1300 Ma were not included due to lack of these components in the Ellsworth-Whitmore Mountains (see discussion in the text). The kernel density estimators of the lower (L.) and upper (U.) Heritage Group, Crashsite Group, and Whiteout Conglomerate are overlaid
Series: Geological Society, London, Special Publications
Published: 01 January 2005
DOI: 10.1144/GSL.SP.2005.246.01.14
EISBN: 9781862394940
... varieties than are seen in the Falklands example) have been recovered from the Whiteout Conglomerate of the Ellsworth Mountains ( Debrenne 1992 ). That conglomerate is the local representative of the Permo-Carboniferous, Gondwanan tillite and hence the time-stratigraphical equivalent of the Fitzroy Tillite...
FIGURES | View All (5)
Journal Article
Published: 01 December 2000
Bulletin of Canadian Petroleum Geology (2000) 48 (4): 364-366.
...: A multidisciplinary study . J.W. Schopf and C. Klein (eds.). Cambridge University Press , Cambridge , p. 51 – 52 . Matsch , C. L. and Ojakangas , R.W. 1991 . Comparisons in depositional style of “polar” and “temperate” glacial ice; Late Paleozoic Whiteout Conglomerate (West...
Series: Geological Society, London, Special Publications
Published: 01 January 2019
DOI: 10.1144/SP475.1
EISBN: 9781786204141
... the Ellsworth Mountains, Matsch & Ojakangas (1992) describe c. 1000 m of diamictite, the Whiteout Conglomerate, containing several widely spaced intervals of thinly interbedded mudstone, siltstone and sandstone up to c. 15 m thick. The upper contact of the diamictite with the overlying Polarstar...
FIGURES | View All (6)
Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP381.23
EISBN: 9781862396401
... may be a displaced part of the Ellsworth basin ( Laudon 1991 ). Highly siliceous sandstones and conglomerates (Urfjell Group) in the Urfjell Range of the Kirwan Escarpment (Dronning Maud Land; Fig. 1 ) were correlated with the Taylor Group of the Transantarctic Mountains ( Wolmarans & Kent 1982...
FIGURES | View All (14)
Journal Article
Journal: GSA Bulletin
Published: 01 July 2001
GSA Bulletin (2001) 113 (7): 939-958.
... subduction. The Liberty Hills Formation is a coarse- grained siliciclastic succession of conglomerates, quartzites, and argillites. Lateral facies variations reveal a northward gradation from coarse-grained fluvial deposits ( Curtis and Lomas, 1999 ), through transitional deltaic units, to fine-grained...
FIGURES | View All (15)
Journal Article
Published: 26 July 2017
Scottish Journal of Geology (2017) 53 (2): 71-87.
... to that of the SNAE erratic, one particularly curious phenomenon is the distribution of erratic clasts of archaeocyathan limestone in the diamictite deposits left across southern Gondwana by Early Permian glaciation emanating from East Antarctica: the Whiteout Conglomerate (Ellsworth Mountains, West Antarctica...
FIGURES | View All (9)
Journal Article
Published: 03 May 2017
Journal of the Geological Society (2017) 174 (5): 803-816.
... , I.O. & Gahagan , L.M. 2013 . The Scotia Arc: genesis, evolution, global significance . Annual Review of Earth and Planetary Sciences , 41 , 767 – 793 . Debrenne , F. 1992 . The archaeocyathan fauna from the Whiteout Conglomerate, Ellsworth Mountains, West Anatarctica...
FIGURES | View All (9)
Journal Article
Journal: Geosphere
Published: 11 March 2019
Geosphere (2019) 15 (2): 576-604.
... ), the glacigenic Whiteout Conglomerate is overlain by the Permian Polarstar Formation, but folding and faulting prevent an accurate estimate of thickness, although it is probably on the order of 300–500 m ( Collinson et al., 1992 ). The Polarstar Formation is dominated by shales and siltstones, with subordinate...
FIGURES | View All (20)
Journal Article
Journal: GSA Bulletin
Published: 01 September 2010
GSA Bulletin (2010) 122 (9-10): 1480-1498.
...-grained mixed mud and sand-sized matrix. Mud rip-up clasts are observed in the uppermost diamictite at the Huaco locality. Clast-supported diamictites (Dcs) occur as laterally discontinuous beds displaying lenticular morphology. Clast-supported conglomerates and trough cross-bedded and ripple-laminated...
FIGURES | View All (9)
Series: SEPM Concepts in Sedimentology and Paleontology
Published: 01 January 2013
DOI: 10.2110/sepmcsp.11.126
EISBN: 9781565762893
...). Laird and Bradshaw ( in Hambrey and Harland, 1981 , pp. 237-240) discussed tillites from North Victoria Land (T84: 72°S, 163°E). Ojakangas and Matsch ( in Hambrey and Harland, 1981 , pp. 241-244) discussed the Whiteout Conglomerate of the Ellsworth Mountains as a tillite (T85: 78°S, 90°W). Kyle...
FIGURES | View All (4)