Journal ArticleDOI
Precambrian ophiolites of arabia: geologic settings, UPb geochronology, Pb-isotope characteristics, and implications for continental accretion
TLDR
In this paper, the authors used the UPb method to date ophiolites of the Yanbu suture (northwestern shield) of the Nabitah suture to approximately 740-780 Ma.About:
This article is published in Precambrian Research.The article was published on 1988-01-01. It has received 220 citations till now. The article focuses on the topics: Ophiolite & Mozambique Belt.read more
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ARC Assembly and Continental Collision in the Neoproterozoic East African Orogen: Implications for the Consolidation of Gondwanaland
TL;DR: The most important, rapid, and enigmatic changes in our Earth's environment and biota occurred during the Neoproterozoic Era (1000-540 million years ago; Ma).
Journal ArticleDOI
A synopsis of events related to the assembly of eastern Gondwana
TL;DR: The assembly of the eastern part of Gondwana (eastern Africa, Arabian-Nubian shield (ANS), Seychelles, India, Madagascar, Sri Lanka, East Antarctica and Australia) resulted from a complex series of orogenic events spanning the interval from ∼750 to ∼530 Ma as mentioned in this paper.
Journal ArticleDOI
Post-Collisional Alkaline Granites
TL;DR: Alkaline granites that may have formed in postcollisional plate tectonic environments are present in the Alaskan Cordillera, the New England and Lachlan Fold Belts of Australia, and the Arabian-Nubian Shield as mentioned in this paper.
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.
References
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Journal ArticleDOI
Approximation of terrestrial lead isotope evolution by a two-stage model
J.S. Stacey,Jan Kramers +1 more
TL;DR: In this paper, a two-stage model for terrestrial lead isotope evolution is proposed, which permits the age of the earth to be that of the meteorite system and also yields good model ages for samples of all ages.
Journal ArticleDOI
Precision Measurement of Half-Lives and Specific Activities of U 235 and U 238
TL;DR: New determinations of the half-lives of half-life values of $ −235 and −238 have been made improved techniques have allowed the halflife values to be measured with greater accuracy than has been heretofore achieved as discussed by the authors.
Journal ArticleDOI
A low-contamination method for hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determinations
TL;DR: In this paper, Krogh et al. developed a simple procedure for the decomposition of zircon and the extraction of U and Pb for isotopic age determinations.
Journal ArticleDOI
Chromian spinel as a petrogenetic indicator in abyssal and alpine-type peridotites and spatially associated lavas
Henry J. B. Dick,Thomas Bullen +1 more
TL;DR: The composition of chromian spinels in alpine-type peridotites has a large reciprocal range of Cr and Al, with increasing Cr# (Cr/(Cr+Al)) reflecting increasing degrees of partial melting in the mantle as mentioned in this paper.
OtherDOI
Tectonics of the Indonesian region
TL;DR: The plate-tectonic evolution of a region can be deduced by following the as-sumptions that subduction zones are characterized by ophiolite, melange, wildflysch, and blueschist, that intermediate and silicic calc-alkaline igneous rocks form above Benioff zones, and that truncations of orogenic belts indicate rifting as mentioned in this paper.
Related Papers (5)
Geochronologic and isotopic constraints on late Precambrian crustal evolution in the Eastern Desert of Egypt
Robert J. Stern,Carl E. Hedge +1 more