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Mount Ellen

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Journal Article
Journal: GSA Bulletin
Published: 01 September 2003
GSA Bulletin (2003) 115 (9): 1110-1121.
... § jenelle.black@hartcrowser.com This study was funded by the Earth Systems Institute and Crown Pacific Corporation. Reviews of earlier drafts by Steven Kite, Ellen Wohl, Tom Lisle, Jim Pizzuto, Dan Miller, and Paul Bigelow greatly improved various aspects of the manuscript. References Bagnold...
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Series: GSA Memoirs
Published: 01 January 2007
DOI: 10.1130/2007.1200(12)
... core. Garnet Sm-Nd ages of 88–86 Ma restrict the last regional metamorphism to no less than 3 m.y. after emplacement of the 96–91 Ma Mount Stuart batholith. These ages and petrologic data reflecting only negligible to moderate pressure increases (0–3.6 kbar) during garnet growth indicate a time lag...
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Journal Article
Journal: GSA Bulletin
Published: 01 October 1998
GSA Bulletin (1998) 110 (10): 1258-1267.
...Steven W. Anderson; Ellen R. Stofan; Jeffrey J. Plaut; David A. Crown Abstract We determined block size distributions on the surfaces of Holocene silicic lava flows at the Inyo domes and the Medicine Lake volcano, and studied the development of blocks on the active Mount St. Helens and Mount Unzen...
Journal Article
Published: 01 February 2005
The Canadian Mineralogist (2005) 43 (1): 367-385.
...Harold H. Stowell; Ellen Stein Abstract Coronas on garnet, reported from numerous localities throughout the North Cascades Crystalline Core, have been interpreted to record rapid exhumation, associated with regional late Cretaceous and early Paleogene unroofing. Granodiorite dikes adjacent...
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Journal Article
Journal: GSA Bulletin
Published: 01 June 2003
GSA Bulletin (2003) 115 (6): 729-764.
...Wes Hildreth; Judy Fierstein; Marvin Lanphere Abstract Mount Baker, a steaming, ice-mantled, andesitic stratovolcano, is the most conspicuous component of a multivent Quaternary volcanic field active almost continuously since 1.3 Ma. More than 70 packages of lava flows and ∼110 dikes have been...
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Series: GSA Special Papers
Published: 01 January 1987
DOI: 10.1130/SPE215-p165
... in Aliso Canyon that intrude thick sequences of ribbon chert suggest off-axis, intraplate volcanism. Transitional subalkaline to alkaline basalts of the Snow Mountain Complex represent sea-mount volcanism, as shown by MacPherson (1983) and others. Volcanic rocks from Paskenta and possibly Avila Beach occur...
Series: DNAG, Centennial Special Volume
Published: 01 January 1985
DOI: 10.1130/DNAG-CENT-v1.47
EISBN: 9780813754130
... to ignore mounting evidence that the Franciscan contains rocks coeval to the Great Valley Sequence, which ranges in age from Tithonian to Late Cretaceous, despite the fact that rocks of typical Franciscan lithology (e.g., ophiolites) underlie the Knoxville and should therefore be older than the Great Valley...
Series: DNAG, Centennial Special Volume
Published: 01 January 1985
DOI: 10.1130/DNAG-CENT-v1.143
EISBN: 9780813754130
... of 1926, 1927, and 1928 was field assistant to Noel E. Odell who had just returned from an expedition to Mount Everest on which he had been geologist and had made great efforts to find G. Mallory and A. Irvine, lost in their attempt to reach the summit. He was such an attractive teacher that on returning...
Series: DNAG, Centennial Special Volume
Published: 01 January 1985
DOI: 10.1130/DNAG-CENT-v1.237
EISBN: 9780813754130
... region, was only possible because of Wager’s outstanding abilities as a mountaineer, polar explorer and leader, as demonstrated on his Greenland expeditions of 1930-31,1932,1935-36 and 1953, as well as by his feats on Mount Everest in 1933. Wager’s interests extended to a wide range of traditional earth...
Journal Article
Journal: GSA Bulletin
Published: 01 July 2015
GSA Bulletin (2015) 127 (7-8): 926-944.
...Alan D. Chapman; W.G. Ernst; Eric Gottlieb; Vladislav Powerman; Ellen P. Metzger Abstract Correlation of lithotectonic packages across major transcurrent structures is critical to understanding the tectonic evolution of the North American continental margin. Detrital zircon geochronology...
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Journal Article
Published: 01 January 2012
European Journal of Mineralogy (2012) 24 (1): 5-21.
...Ellen Kooijman*; Jasper Berndt; Klaus Mezger Abstract A robust method for U-Pb dating of zircon by laser ablation ICP-MS was established using a Thermo-Finnigan Element2 sector field ICP-MS coupled to a New Wave UP193HE ArF Excimer laser system. This included the construction of a low-volume sample...
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Journal Article
Journal: Geosphere
Published: 01 April 2016
Geosphere (2016) 12 (2): 366-376.
...David W. Andersen; Nancy C. Shostak; Karen M. Locke; Nathan P. Ramstetter; Ellen P. Metzger Abstract Gravel and sand samples from alluvium in five wells in the Santa Clara Valley, California (USA), have particle compositions that help constrain patterns of Quaternary basin evolution and sediment...
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Journal Article
Journal: PALAIOS
Published: 20 September 2019
PALAIOS (2019) 34 (9): 424-436.
...ANTHONY P. JIJINA; ELLEN D. CURRANO; KURT CONSTENIUS ABSTRACT New collections of plant macrofossils and radiometric dates from the Herren beds of north-central Oregon provide the opportunity to document floral communities and calculate foliar-derived climate estimates from the warm early Eocene...
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Journal Article
Published: 07 May 2019
Geological Magazine (2019) 156 (11): 1949-1964.
...Katarzyna Walczak; Simon Cuthbert; Ellen Kooijman; Jarosław Majka; Matthijs A. Smit Abstract The first find of microdiamond in the Nordøyane ultra-high-pressure (UHP) domain of the Western Gneiss Region (WGR) of the Scandinavian Caledonides reshaped tectonic models for the region. Nevertheless...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 2009
GSA Bulletin (2009) 121 (11-12): 1537-1561.
...Robert McKay; Greg Browne; Lionel Carter; Ellen Cowan; Gavin Dunbar; Lawrence Krissek; Tim Naish; Ross Powell; Josh Reed; Franco Talarico; Thomas Wilch Abstract A 1284.87-m-long sediment core (AND-1B) from beneath the McMurdo sector of the Ross Ice Shelf provides the most complete single section...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2010
GSA Bulletin (2010) 122 (7-8): 1067-1080.
...Ellen A. Cowan; Keith C. Seramur; Ross D. Powell; Bryce A. Willems; Sean P.S. Gulick; John M. Jaeger Abstract Glacimarine sedimentary deposits within the basins of Muir Inlet, a 48-km-long silled fjord, are interpreted from complimentary sets of high-resolution, seismic-reflection profiles using...
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Journal Article
Published: 01 February 2016
American Mineralogist (2016) 101 (2): 407-414.
...Jeffrey E. Post; Ellen Thomas; Peter J. Heaney Abstract Synchrotron powder X-ray diffraction and scanning electron microscopy examinations of manganese oxide concretions/nodules (~0.3–1.0 mm diameter) from ODP Site 1262 on Walvis Ridge in the Southeastern Atlantic Ocean revealed that they consist...
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Journal Article
Published: 06 November 2009
Geological Magazine (2010) 147 (3): 339-362.
...MICHAEL BRÖCKER; REINER KLEMD; ELLEN KOOIJMAN; JASPER BERNDT; ALEXANDER LARIONOV Abstract U–Pb zircon geochronology and trace element analysis was applied to eclogites and (ultra)high-pressure granulites that occur as volumetrically subordinate rock bodies within orthogneisses of the Orlica...
Journal Article
Published: 01 November 2014
Mineralogical Magazine (2014) 78 (6): 1491-1504.
...Deirdre E. Clark; Marjolein F. A. Vogels; Marcel van der Perk; Philip N. Owens; Ellen L. Petticrew Abstract Mining is known to be a major source of metal contamination for fluvial systems worldwide. Monitoring and understanding the effects on downstream water and sediment quality is essential...
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Journal Article
Published: 01 April 2012
Journal of Sedimentary Research (2012) 82 (4): 270-282.
...Ellen A. Cowan; Poul Christoffersen; Ross D. Powell Abstract: Subglacial processes are described using a nested set of samples from AND-1B drill core collected from beneath the Ross Ice Shelf as part of the ANtarctic geologic DRILLing program (ANDRILL). An interval from the late Pleistocene...
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