Author(s)	Groot, J.J.
Date Accessioned	2007-08-06T17:32:11Z
Date Available	2007-08-06T17:32:11Z
Publication Date	1955-07
Description	This report has 2 plates listed separately.	en
Abstract	The non-marine Cretaceous sediments of northern Delaware older than the Magothy formation cannot be divided accurately into formations or mappable geologic units because their lithologic characteristics are very similar. However, two heavy mineral zones can be distinguished in these deposits: a lower staurolite-kyanite-tourmaline-zircon zone, and an upper tourmaline-zircon-rutile zone with abundant alterites. They have been named the Patuxent zone and the Patapsco-Raritan zone respectively. The Magothy formation is characterized by abundant staurolite and also contains significant amounts of tourmaline. The marine Upper Cretaceous deposits have a greater variety of heavy minerals than the underlying non-marine sediments. They contain abundant epidote; chloritoid, first appearing at the base of the Merchantville formation, is persistently present. Garnet is found in the Merchantville and the Mount Laurel-Navesink formations. The heavy mineral composition of the Cretaceous sediments is shown in table IV.	en
URL	http://udspace.udel.edu/handle/19716/2793
Language	en_US	en
Publisher	Newark, DE: Delaware Geological Survey, University of Delaware	en
Part of Series	Bulletin	en
Part of Series	5	en
Keywords	Sedimentary	en
Keywords	Petrology	en
Keywords	Cretaceous	en
Keywords	Paleogeographic	en
Title	Sedimentary Petrology Of The Cretaceous Sediments Of Northern Delaware In Relation To Paleogeographic Problems	en
Type	Technical Report	en

Sedimentary Petrology Of The Cretaceous Sediments Of Northern Delaware In Relation To Paleogeographic Problems

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