Synthesis of geological, structural, and geochronologic data (phase V, deliverable 53)

Dwight C. Bradley; Paul O'Sullivan; Michael A. Cosca; Holly Motts; John D. Horton; Cliff D. Taylor; Georges Beaudoin; Gregory K. Lee; Jahan Ramezani; Daniel N. Bradley; James V. Jones III; Samuel Bowring

doi:10.3133/ofr20131280A

Synthesis of geological, structural, and geochronologic data (phase V, deliverable 53)

Open-File Report 2013-1280-A

Prepared in cooperation with the Ministry of Petroleum, Energy, and Mines of the Islamic Republic of Mauritania

By: Dwight C. Bradley, Paul O'Sullivan, Michael A. Cosca, Holly Motts, John D. Horton, Cliff D. Taylor, Georges Beaudoin, Gregory K. Lee, Jahan Ramezani, Daniel N. Bradley, James V. Jones III, and Samuel Bowring

https://doi.org/10.3133/ofr20131280A

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Document: Chapter A (pdf)
Larger Work: This publication is Chapter A of Second Projet de Renforcement Institutionnel du Secteur Minier de la République Islamique de Mauritanie (PRISM-II) Phase V
Companion File: Tables
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Abstract

This report is a companion to the new Geologic Map of Mauritania (Bradley and others, 2015; referred to herein as “Deliverable 51”) and the new Structural Geologic Map of Mauritania (Bradley and others, 2015a; referred to herein as “Deliverable 52”). Section 1 contains explanatory information for these two digital maps. Section 2 covers the analytical methods used in obtaining new U-Pb ages from 9 igneous rock samples, new detrital zircon ages from 40 sedimentary or metasedimentary rock samples, and new ⁴⁰Ar/³⁹Ar ages from 12 samples of metamorphic rocks and veins. Sections 3 through 6 present the new geochronological results, organized by region. In Section 7, we discuss implications of the new ages for the regional geology and discuss problematic results. Finally, in Section 8, we summarize the geology and tectonic evolution of Mauritania in narrative form, drawing on new and published information, in the context of global tectonics. The report is being released in both English and French. In both versions, we use the French-language names for formal stratigraphic units.

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Additional publication details
Publication type	Report
Publication Subtype	USGS Numbered Series
Title	Synthesis of geological, structural, and geochronologic data (phase V, deliverable 53)
Series title	Open-File Report
Series number	2013-1280
Chapter	A
DOI	10.3133/ofr20131280A
Year Published	2015
Language	English
Publisher	U.S. Geological Survey
Publisher location	Reston, VA
Contributing office(s)	Central Mineral and Environmental Resources Science Center
Description	Report: xiv, 140 p.; Tables
Larger Work Type	Report
Larger Work Subtype	USGS Numbered Series
Larger Work Title	Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II) (Open File Report 2013-1280)
Country	Mauritania
Online Only (Y/N)	N
Additional Online Files (Y/N)	N
Google Analytic Metrics	Metrics page