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Alamo Breccia Member

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Journal Article
Journal: Geosphere
Published: 01 February 2015
Geosphere (2015) 11 (1): 123-143.
...Andrew J. Retzler; Andrew J. Retzler; Leif Tapanila; Julia R. Steenberg; Carrie J. Johnson; Reed A. Myers Abstract Marine facies of carbonate and siliciclastic sediments deposited on top of the upper Devonian Alamo Breccia Member identify the shape and size of the Alamo impact crater in south...
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Series: Society for Sedimentary Geology
Publisher: Society for Sedimentary Geology
Published: 01 January 2017
DOI: 10.2110/sepmsp.107.11
EISBN: 9781565763456
...), evidenced mainly by the regional Alamo Breccia Member of the Guilmette Formation. Two transects arranged from seven stratigraphic sections measured through the lower ~300 m of the Guilmette Formation record environmental lithofacies deposited from peritidal to deep subtidal zones. Stacking patterns...
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Series: GSA Field Guide
Published: 01 January 2008
DOI: 10.1130/2008.fld011(10)
EISBN: 9780813756110
.... Note, however, that many of the sequence boundaries tend to match the boundaries of named formations and members, from the upper Sevy Dolostone (Dse3) at the base to the carbonate buildup over the Alamo Breccia (Dgb3) at the top. The overlying upper segment of the informal upper member of the Guilmette...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2008.2437(07)
... and Sandberg, 2003a , 2006 ). Reso (1963) chose the top of a persistent cliff-forming, stromatoporoid-rich interval for the boundary between lower and upper members of the Guilmette Formation. That interval is now the middle Alamo Breccia Member, formally proposed by Sandberg et al. (1997...
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Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP371.8
EISBN: 9781862396340
... intervals of normally graded beds at the top of the unit ( Warme & Sandberg 1996 ; Warme & Kuehner 1998 ; Pinto & Warme 2008 ). The Alamo Breccia is the middle member of the Guilmette Formation. The Alamo Breccia Member is underlain by the Yellow Slope-forming Member and the Carbonate...
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Series: GSA Special Papers
Published: 01 October 2015
DOI: 10.1130/2015.2517(02)
... of the eastward-traveled outer crater rim created by the ca. 382 Ma (early Late Devonian, middle Frasnian) Alamo impact. The Alamo impact was produced by a 5-km-diameter bolide, most likely a comet, which excavated a transient submarine crater 44–65 km in diameter. Comparison of thin (8–12 m) Alamo Breccia...
Journal Article
Journal: Geosphere
Published: 01 June 2009
Geosphere (2009) 5 (3): 252-269.
... systems. The Pajarito fault (PF) strikes north to northeast through Bandelier National Monument and the city of Los Alamos ( Figs. 1 and 3 ). The geometry of the fault varies appreciably along strike (e.g., McCalpin 1997 , 2005 ; Gardner et al., 1999 ; this study). The PF is expressed...
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Journal Article
Journal: Lithosphere
Published: 01 October 2011
Lithosphere (2011) 3 (5): 328-345.
...) the north-striking Pajarito fault zone. Similarly, our data do not record any measurable relative change in declination difference (−1.1° ± 1.6°) that could be interpreted as a rotation over the ∼0.36 m.y. time duration between deposition of the two principal stratigraphic members of the Bandelier Tuff...
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Journal Article
Published: 01 January 2006
Reviews in Mineralogy and Geochemistry (2006) 60 (1): 83-219.
... science disciplines focused on a common cause, the science of the Moon. Each Apollo rock was given a 5-digit sample number. As an illustration, examples of some well known Apollo rock samples from each of the six missions are 10017 (Apollo 11 basalt), 12013 (Apollo 12 complex breccia), 14310 (Apollo...
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Journal Article
Published: 01 August 2005
Vadose Zone Journal (2005) 4 (3): 620-636.
...Kay H. Birdsell; Brent D. Newman; David E. Broxton; Bruce A. Robinson Abstract The Pajarito Plateau in northern New Mexico, on which the Los Alamos National Laboratory is situated, is characterized by a thick vadose zone overlying the regional aquifer of the western Espanola Basin. In this study...
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Journal Article
Journal: Geophysics
Published: 01 March 2007
Geophysics (2007) 72 (2): B31-B45.
... member 0.174 57.5 TA-16 (R-25) Perched zone Broxton et al., 2002a, Los Alamos National Laboratory report, LA-13909-MS, Table 7.2–2 Cerros del Rio basalt 0.334 29.9 Mortandad Canon (R-15) Perched zone Longmire et. al, 2001, Los Alamos National Laboratory report, LA-13749-MS, Table 5.2–1...
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Journal Article
Published: 01 August 2005
Vadose Zone Journal (2005) 4 (3): 637-652.
... ( Broxton et al., 1995 ). Los Alamos Canyon LAOI-3.2a
 50 m (165.5 ft)
 2018 m (6620 m) 41 m (134 ft) 9 m (>31 ft) basal ash-flow tuffs of
   the Otowi Member
   and porous, well-
   bedded and well-
   sorted fall deposits
   of the Guaje
   Pumice Bed perched zone was not fully
   penetrated...
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Journal Article
Journal: Geology
Published: 01 January 2017
Geology (2017) 45 (1): 7-10.
... in Grotzinger et al. (2014) to have formed by injection of fluidized sediment. Dotted line shows contact between the Gillespie Lake and overlying Sheepbed members of the Yellowknife Bay formation. B: Structure with circular cross section showing crude concentric stratification and a crinkly fabric. The upper...
Journal Article
Published: 01 August 2005
Vadose Zone Journal (2005) 4 (3): 522-550.
... Toledo interval crops out in Los Alamos Canyon and in canyons to the north, and it occurs in many of the wells on the plateau. It unconformably overlies the deeply eroded Otowi Member, as described above, and its thickness is highly variable, ranging from 1 to 120 m (3–390 ft). Structure contours...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2011
GSA Bulletin (2011) 123 (1-2): 371-383.
.... A1 – A14 . Warme J.E. , 2004 , The many faces of the Alamo impact breccia : Geotimes , v. 49 , no. 1 , p. 26 – 29 . Warme J.E. Kuehner H.C. , 1998 , Anatomy of an anomaly; the Devonian catastrophic Alamo impact breccia of southern Nevada , in Ernst W.G. Nelson...
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Journal Article
Published: 01 July 2006
Journal of Paleontology (2006) 80 (4): 760-767.
... Member is ∼80 m thick and includes several boulder-rich, graded breccia units. Bulbous stromatoporoids are the dominant clasts in the Alamo Breccia. Weathering of this resistant member provides natural sections through thousands of stromatoporoid clasts. Above the Alamo Breccia, highly fossiliferous...
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Journal Article
Published: 01 June 2001
Mineralogical Magazine (2001) 65 (3): 373-396.
..., plagioclase, alkali feldspar, with rare zircon and apatite set in an ultra-fine matrix of quartz, micaceous material, clay, opaques and minor carbonate. Glass shard forms are preserved. Microprobe analysis of clastic plagioclase and alkali feldspar indicate that they are nearly pure end-members (An 2 Ab 98...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2430(26)
... Disko to Svartenhuk. Volcanism started here in Middle Paleocene time in a subsiding marine environment, so the earliest volcanic rocks are hyaloclastite breccias. After a significant Early Paleocene uplift, later volcanism was almost entirely subaerial ( Dam et al., 1998 ). The volcanic rocks...
Series: Society for Sedimentary Geology
Publisher: Society for Sedimentary Geology
Published: 01 January 2017
DOI: 10.2110/sepmsp.107.12
EISBN: 9781565763456
... breccia of the Famennian Logan Gulch Member of the Three Forks Formation was deposited above a major sequence boundary in restricted environments. It is 34 m thick, but it was 40 to 50% thicker before dissolution of evaporites. The time-correlative upper Jefferson Formation in Idaho is much thicker ( Fig...
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Journal Article
Journal: Geosphere
Published: 01 April 2008
Geosphere (2008) 4 (2): 445-458.
... ). The Crater Rim, Ring, and Runup Realms correspond, respectively, to the previously defined, nongenetic Alamo Breccia Zones 1, 2, and 3 of Warme and Sandberg (1995) , Warme and Kuehner (1998) , Sandberg et al. (2002) , and Morrow et al. (2005) . In Nevada, the position of the Devonian carbonate-shelf...
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