Results 171 to 180 of about 95,502 (229)

The Stratigraphy of the Kinderhook Series of Iowa [PDF]

, 1931
L. R. Laudon
openalex   +1 more source

Microbial mats and thalassinid shrimp: Spatial and geochemical interactions in a modern intertidal environment

Sedimentology, EarlyView.
ABSTRACT This research examines the spatial and geochemical interactions between mat‐forming microorganisms and thalassinid shrimp in an intertidal flat situated on the shores of Willapa Bay, Washington, USA. The study serves as a contemporary analog for the relationships between mats and burrowing organisms in deep time.
Brette S. Harris, Sara K. Biddle, Maya T. LaGrange, Scott Melnyk, Cody N. Lazowski, Jenifer S. Spence, Daniel Alessi, Jeffrey Kavanaugh, Kurt O. Konhauser, Murray K. Gingras   +9 more
wiley   +1 more source

Abstract: Sequence Stratigraphy of the Upper Kearny Formation (Morrowan Series, Lower Pennsylvanian System), for the Santa Fe Trail, Cimarron Valley, and Stirrup fields, Morton County, Kansas 

, 1999
KRISTIE L. LUCHTEL
openalex   +1 more source

Stratigraphy and Porosity Modeling of South-Central Illinois (USA) Chester (Upper Mississippian) Series Sandstones Using Petrel [PDF]

, 2015
Darren Kimple, Eric W. Peterson, David H. Malone   +2 more
openalex   +1 more source

Aligned hydrothermal fluid‐flow pathways in Middle Permian near‐shore marine sediments beneath a basaltic lava flow

Sedimentology, EarlyView.
ABSTRACT Tubular and curviplanar structures, outlined by the occurrence of haematite/goethite, chlorite, quartz and albite, are developed in the Middle Permian Broughton Formation in the southern Sydney Basin, New South Wales, Australia. These structures are interpreted as fluid‐flow pathways resulting from the ejection of heated pore fluids as a thick
Paul F. Carr, Brian G. Jones, G. R. Shi, Sangmin Lee, Mark A. Peterson, Karen E. Alley   +5 more
wiley   +1 more source

Experimental observations of vertical segregation of sands in oscillatory flows

Sedimentology, EarlyView.
ABSTRACT Measurements assessing the composition of bed sands under oscillatory flows were conducted in the large wave flume (Großer Wellenkanal, GWK) in Hannover, focusing on diverse sand mixtures. The experiments featured velocity‐asymmetric flows with a consistent wave period of 7 s, while considering two distinct wave heights (1 and 1.5 m). The sand
Tiago Abreu, Caroline C. Ferreira, João Matos, Paulo A. Silva, Ana M. Bernabeu   +4 more
wiley   +1 more source

Contributions to the Stratigraphy of the Allegheny Series in Columbiana and Mahoning Counties, Ohio. Part I, Stratigraphy and Correlation of the Coals and Limestone Below the Lower Kittanning Coal

, 1943
M. T. Sturgeon
openalex   +1 more source

Protracted intercontinental aridification preserved within the early Late Cretaceous strata of the Eastern Gobi Basin, Mongolia

Sedimentology, EarlyView.
ABSTRACT Mongolia's Eastern and Western Gobi Basins preserve a globally significant record of Cretaceous terrestrial vertebrates, yet their biostratigraphic correlations are complicated by a complex geological history. The Eastern Gobi Basin, a northeast‐southwest trending fault‐bounded rift system, includes several minor sub‐basins with distinct ...
Ryan T. Tucker, Michael Ryan King, Puntsag Delgerzaya, William J. Freimuth, Tsogtbaatar Chinzorig, Khishigjav Tsogtbaatar, Ryuji Takasaki, Mototaka Saneyoshi, Alfio Alessandro Chiarenza, Lindsay E. Zanno   +9 more
wiley   +1 more source

The regional evolution of a dryland fluvio‐aeolian and lacustrine succession in response to allocyclic forcing: insights from the Early Permian Cutler Group, Utah, USA

Sedimentology, EarlyView.
ABSTRACT Preserved allocyclic signatures in the rock record often reflect basin‐scale climatic variability and serve as key proxies for correlating ancient dryland successions. The notion of climate cyclicity, however, remains largely untested on regionally constrained, outcrop‐calibrated studies.
Oliver Button, Jack G. Connor, Ross P. Pettigrew, Ben A. Kilhams, John A. Howell   +4 more
wiley   +1 more source

Magnetostratigraphy and Source Characterisation Across the Early Miocene Unconformity, Northern Rocky Mountains, USA

Terra Nova, EarlyView.
ABSTRACT The early Miocene unconformity (EMU) formed during a transition in the tectonic regime of western North America that coincided with faunal diversification. The Railroad Canyon section in the northern Rocky Mountains provides a complete geologic record around this event. Our new magnetostratigraphic study in combination with published U‐Pb ages
Dieke Gerritsen, Stuart A. Gilder, Alina L. Ludat, Michael R. Wack   +3 more
wiley   +1 more source