P
Peter R. Johnson
Researcher at United States Geological Survey
Publications - 34
Citations - 3883
Peter R. Johnson is an academic researcher from United States Geological Survey. The author has contributed to research in topics: Terrane & Crust. The author has an hindex of 21, co-authored 34 publications receiving 3220 citations.
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Journal ArticleDOI
Late Cryogenian-Ediacaran history of the Arabian-Nubian Shield: A review of depositional, plutonic, structural, and tectonic events in the closing stages of the northern East African Orogen
Peter R. Johnson,Arild Andresen,Alan S. Collins,Abdel-Rahman Fowler,Harald Fritz,W. Ghebreab,Timothy M. Kusky,Robert J. Stern +7 more
TL;DR: The geologic history of the ANS during this period provides insight into the closing developmental stages of one of the world's largest accretionary orogens as mentioned in this paper, which is known as the Arabian-Nubian Shield (ANS).
Journal ArticleDOI
Orogen styles in the East African Orogen: A review of the Neoproterozoic to Cambrian tectonic evolution.
Harald Fritz,Mohamed G. Abdelsalam,Kamal A. Ali,Bernard Bingen,Alan S. Collins,Abdel-Rahman Fowler,Woldai Ghebreab,Christoph Hauzenberger,Peter R. Johnson,Timothy M. Kusky,P.H. Macey,S. Muhongo,Robert J. Stern,Giulio Viola +13 more
TL;DR: A first phase of ocean closure and accretion of terranes defines the East African Orogeny, which mainly affected the southern parts of east Africa and Madagascar, and was followed by extension phases that were accompanied by emplacement of late- to post-tectonic granitoids.
Journal ArticleDOI
Continental lithosphere of the Arabian Plate: A geologic, petrologic, and geophysical synthesis
Robert J. Stern,Peter R. Johnson +1 more
TL;DR: The Arabian plate is one of the smaller and younger of the Earth's lithospheric plates as discussed by the authors, and the distribution of these rocks and variations in elevation across the Plate cause a pronounced geologic and topographic asymmetry, with extensive basement exposures (the Arabian Shield) and elevations of as much as 3000 meters in the west and a Phanerozoic succession (Arabian Platform) that thickens, and a surface that descends to sea level, eastward between the Shield and the northeastern margin of the Plate.
Journal ArticleDOI
Development of the Arabian-Nubian Shield: perspectives on accretion and deformation in the northern East African Orogen and the assembly of Gondwana
TL;DR: The Arabian-Nubian shield froms the suture between East and West Gondwana at the northern end of the East African Orogen (EAO) as mentioned in this paper.
Book ChapterDOI
Neoproterozoic ophiolites of the arabian-nubian shield
TL;DR: In this paper, Ophiolites of mid-Neoproterozoic age are abundant in the Arabian-Nubian Shield (ANS) of NE Africa and Arabia.