Upper Cambrian Transgressions—A Driver for Microbial Reef Development across the Southwest Great American Carbonate Bank: Case Study from Central Texas

2019 ◽  
Author(s):  
Pankaj Khanna ◽  
H. Hopson Heath ◽  
André W. Droxler ◽  
Paul M. (Mitch) Harris ◽  
Hadley Swartz ◽  
...  
Keyword(s):  
Reef Development ◽  
Upper Cambrian ◽  
Central Texas ◽  
Carbonate Bank

ULTIMATE DEMISE OF LARGE UPPER CAMBRIAN MICROBIAL REEFS (MASON COUNTY, CENTRAL TEXAS)

2016 ◽  
Author(s):  
Pulkit Singh ◽  
◽  
André W. Droxler ◽  
Heath H. Hopson ◽  
Pankaj Khanna ◽  
...  
Keyword(s):  
Upper Cambrian ◽  
Central Texas ◽  
Mason County

GENETIC PORE TYPES AND A DIAGENESIS LOG FOR CARBONATES AND MICROBIALITE RESERVOIRS (UPPER CAMBRIAN MICROBIAL REEFS, MASON COUNTY, CENTRAL TEXAS)

2017 ◽  
Author(s):  
Jacob Michael Proctor ◽  
◽  
Heath Hilton Hopson ◽  
André W. Droxler ◽  
Naum Derzhi ◽  
...  
Keyword(s):  
Upper Cambrian ◽  
Central Texas ◽  
Mason County ◽  
Pore Types

Facies anatomy of an Upper Cambrian grand cycle: Bison Creek and Mistaya formations, southern Alberta

1989 ◽  
Vol 26 (11) ◽  
pp. 2292-2304 ◽  
Author(s):  
Stephen R. Westrop
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
National Parks ◽  
Carbonate Platform ◽  
Half Cycle ◽  
Upper Cambrian ◽  
Facies Associations ◽  
Southern Alberta ◽  
Shallow Subtidal ◽  
Carbonate Bank

The Bison Creek and Mistaya formations form the youngest Cambrian sedimentary grand cycle exposed in Banff and Jasper national parks. The shaly half-cycle of the Bison Creek Formation records the displacement of a carbonate bank during a major rise in sea level that can be identified in other parts of North America. Lithofacies of the Bison Creek Formation fall into three recurrent associations that represent sedimentation in shallow, subtidal, storm-dominated shelf settings. The Mistaya Formation records the reestablishment of carbonate bank deposition, probably due to a decrease in the rate of sea-level rise, and includes two facies associations that represent a mosaic of shallow subtidal to supratidal environments. The grand cycle was terminated by a sea-level rise, possibly eustatic in nature, that drowned the carbonate platform. The overlying shales, mudstones, packstones, grainstones, and rudstones of the Survey Peak Formation mark a return to subtidal, storm-dominated shelf conditions.

Trilobites from the upper part of the Deadwood Formation (Upper Franconian and Trempealeauan stages, Upper Cambrian), Black Hills, South Dakota

1997 ◽  
Vol 71 (1) ◽  
pp. 86-102 ◽  
Author(s):  
James H. Stitt ◽  
Wendy Metcalf Straatmann
Keyword(s):  
New Species ◽  
South Dakota ◽  
Sea Level ◽  
Great Basin ◽  
Black Hills ◽  
Upper Cambrian ◽  
Two New Species ◽  
Study Interval ◽  
Central Texas

Trilobites assigned to 29 genera and 39 species are reported from the Deadwood Formation in the Black Hills of South Dakota. Two new species, Prosaukia lochmani and Arcifimbria pahasapaensis, are described. Brachiopods are reported from the Taenicephalus Zone.A biostratigraphic zonation is established for the upper part of the Deadwood Formation. The Taenicephalus Zone in the lower part of the study interval is succeeded upsection by the Ellipsocephaloides Zone, both of which are assigned to the Franconian Stage. These two zones are overlain in turn by the Illaenurus and Saukia Zones of the Trempealeauan Stage. These zones are used to correlate this part of the Deadwood with coeval strata in Montana and Wyoming, central Texas, Oklahoma, and Alberta, Canada. The lowstand of sea level that occurred in the Great Basin at the time of the deposition of the Saukiella junia Subzone of the Saukia Zone probably extended eastward into the Black Hills, resulting in the absence of this fauna in the Black Hills.

Understanding geomorphic responses to environmental change: a 19 000-year case study from semi-arid central Texas, USA

2010 ◽  
Vol 25 (6) ◽  
pp. 889-902 ◽  
Author(s):  
Claire Boulter ◽  
Mark D. Bateman ◽  
Charles D. Frederick
Keyword(s):  
Environmental Change ◽  
Central Texas ◽  
Semi Arid

Oolitized fragments of filamentous calcimicrobes and the pseudofossil affinity of Nuia Maslov from the Upper Cambrian rocks of central Texas

1998 ◽  
Vol 72 (3) ◽  
pp. 577-584 ◽  
Author(s):  
Ben R. Spincer
Keyword(s):  
Upper Cambrian ◽  
Central Texas ◽  
Llano Uplift

The origin and affinity of the problematic Nuia Maslov is reappraised from exceptionally preserved specimens in Upper Cambrian (Sunwaptan) rocks of the Llano Uplift, central Texas. Nuia is suggested to be a radial calcitic ooid that has nucleated on fragments of reworked filamentous calcimicrobes rather than a separate microorganism as has been assumed previously. Nuia is found predominantly in intrareef grainstone accumulations, as well as in interreef grainstones, invariably accompanied by other bioclastic debris showing similar radial calcite ooid overgrowths.

MICROBIAL GROWTH PROCESSES AND FABRIC DEVELOPMENT IN UPPER CAMBRIAN MICROBIAL BUILDUPS; MASON COUNTY, CENTRAL TEXAS

2017 ◽  
Author(s):  
Heath Hilton Hopson ◽  
◽  
Andre W. Droxler ◽  
Pankaj Khanna ◽  
Dan Lehrmann ◽  
...  
Keyword(s):  
Microbial Growth ◽  
Growth Processes ◽  
Upper Cambrian ◽  
Central Texas ◽  
Mason County
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