Trapped charge characteristics in quartz are of increasing interest for their utility as indicators sediment provenance. These include sensitivity optically stimulated luminescence (OSL) and thermoluminescence (TL) signal paramagnetic E 1 ’ defect centre quartz. Up until now, these methods have largely been used independently provenance investigations, especially aeolian systems. Variations OSL...

the asmari formation was deposited in the foreland basin of southwest iran (zagros basin). carbonate sequences of the asmari formation consist mainly of large benthic foraminifera along with other skeletal and non-skeletal components. three assemblage zones have been recognized by distribution of these large foraminifera in the study area that indicate oligocene age (rupelian-chattian). absence...

Citation: Riedinger N, Brunner B, Krastel S, Arnold GL, Wehrmann LM, Formolo MJ, Beck A, Bates SM, Henkel S, Kasten S and Lyons TW (2017) Sulfur Cycling in an Iron Oxide-Dominated, Dynamic Marine Depositional System: The Argentine Continental Margin. Front. Earth Sci. 5:33. doi: 10.3389/feart.2017.00033 Sulfur Cycling in an Iron Oxide-Dominated, Dynamic Marine Depositional System: The Argentine...

The pre-Variscan sequence of the Carnic Alps is exposed across state border between north-east Italy and Austria. It includes Middle Ordovician to Lower Pennsylvanian rocks that, although affected by both Variscan Alpine orogeny, preserve continuous non-metamorphosed successions. Depositional settings vary from shallow water open marine environments. Remarkable presence largest Devonian reefs E...

H. Scott Hamlin is a research scientist associate at the Bureau of Economic Geology. He received his B.A. and M.A. degrees and his Ph.D. from the University of Texas at Austin. His research interests include depositional systems, stratigraphy, reservoir characterization, and hydrogeology. Ozona sandstone, Val Verde Basin, Texas: Synorogenic stratigraphy and depositional history in a Permian for...

Deep-water massive (featureless) sands are commonly interpreted as indicators of flow conditions during or shortly after deposition and are almost never interpreted to reflect post-depositional homogenization due to bioturbation. Deep-water deposits of the lower Rio Dell Formation (Pliocene), Eel River basin (NW California), however, reveal previously unrecognized cryptically bioturbated fabric...

From Oligocene to Recent times a series of tectomcally controlled coastal embayments fonned on the Pacific fore-arc side of the southern Central American island-arc system. Each of these basins shows characteristic stratal geometries and facies distributIOns reflecting the complex interaction of changes of sea level. volcaniclastic input. and tectonic activity (subsidence, uplift). Sequential s...