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The AAPG/Datapages Combined Publications Database

Houston Geological Society Bulletin

Abstract


Houston Geological Society Bulletin, Volume 45, No. 2, October 2002. Pages 13-13.

Abstract: Previous HitSoilNext Hit Features Common to the Houston Area (As Seen by a Previous HitSoilNext Hit Scientist)

By

John S. Jacob
Texas A&M Sea Grant Program and Texas Agricultural Extension Service

Previous HitSoilNext Hit science focuses on a very thin layer of the earth's surface where biologic and physico-chemical processes join to form perhaps the most complex environment on the earth. To many field geologists, this zone that so occupies Previous HitsoilNext Hit scientists is just a distraction before getting down to the "real" business. Yet the morphology and processes of this thin layer very much control what travels from the surface to deeper layers and what kind of transformations might occur during the trip.

In this presentation, I focus on common features that geologists might encounter during fieldwork in the Quaternary formations on the Upper Gulf Coast of Texas. We will examine features associated with our expansive soils, including gilgai and slickensides. We will also examine accumulations that occur in the Previous HitsoilNext Hit, such as redoximorphic concentrations of iron (aka "mottles"), calcium carbonate or caliche, gypsum, and manganese. We will discuss what these pedogenic (Previous HitsoilTop-formed) concentrations tell us about the environment of their formation.

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