Results 91 to 100 of about 3,531 (178)

Petrology and Sedimentation of the Archean Quetico Metasediments in the Atikokan-Mine Centre Area, Northwestern Ontario [PDF]

open access: yes, 1988
A Thesis submitted to the faculty of the Graduate School of the University of Minnesota by Frank Pezzutto in partial fulfillment of the requirements for the degree of Master of Science, December 1988.
Pezzutto, Frank
core  

The Addition of Felsic Sediments to the Lower Continental Crust During the Variscan Orogeny

open access: yesGeochemistry, Geophysics, Geosystems
Lower crustal metasedimentary xenoliths (garnet‐sillimanite granulites) from the Bournac breccia pipe in the Massif Central, France, provide a robust example of sediments transported to depth and incorporated into stable lower continental crust during a ...
M. F. Ringwood   +2 more
doaj   +1 more source

Strontium isotopes are consistent with low‐elevation foraging limits for Henst's goshawk

open access: yesWildlife Society Bulletin, 2017
Apex predators play critical roles in the ecosystems they inhabit. Unfortunately, little is known about movement patterns for many species. This information is critical for evaluating vulnerability to habitat loss and the adequacy of existing or proposed
Brooke E. Crowley   +4 more
doaj   +1 more source

Deformational History Reconstruction of Basement Complex Rocks in Okomita, Ojirami and Environs, South Western Nigeria

open access: yesJournal of Applied Sciences and Environmental Management
Deformation histories aid in remodeling the forces related to rock formation. Hence, the objectiveof this paper as to examine the deformational history of the Basement Complex rocks in Okomita, Ojirami and Environs, South Western Nigeria using ...
A. Ogbamikhumi   +2 more
doaj  

Gold, iron and manganese in central Amapá, Brazil

open access: yesBrazilian Journal of Geology
: Greenstone belts with deposits of gold, iron and manganese are common in the Paleoproterozoic Maroni-Itacaiunas Tectonic Province of the Guiana Shield. In Brazil, in the State of Amapá and northwest of Pará, they are represented by the Vila Nova Group,
Wilson Scarpelli, Élio Hiromi Horikava
doaj   +1 more source

Volcanogenic CO2 Degassing in the Songliao Continental Rift System, NE China

open access: yesGeofluids, 2019
The Wudalianchi monogenetic volcanic field (WMVF) is located in the Songliao basin within a major continental rift system in NE China. Bubbling springs and diffuse degassing from soils are typical features of the WMVF.
Wenbin Zhao   +6 more
doaj   +1 more source

Neoproterozoic metasediments and base metal mineralisation in an area north of the Mpande Dome in southern Zambia: an alternative lithostratigraphy classification [PDF]

open access: yes, 2018
A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophyto the Faculty of Science, University of the Witwatersrand, August 2018Prospecting in 2013 to 2015 identified rift-related metasediments in the Mpande Dome area,
King, Heather Leslie
core  

Granitic rocks and metasediments in Archean crust, Rainy Lake area, Ontario: ND isotope evidence for mantle-like SM/ND sources [PDF]

open access: yes, 1983
Granitoids, felsic volcanic rocks and clastic metasediments are typical rocks in Archean granite-greenstone belts that could have formed from preexisting continentasl crust.
Shirey, S. B., Hanson, G. N.
core   +1 more source

3.7 billion year old biogenic remains

open access: yesCommunicative & Integrative Biology, 2017
3.7 Billion year old inclusions inside garnet crystals contain 13C depleted carbonaceous material consistent with biogenic origin. Additional evidence in the form of the other elements of life mainly O, N and P were found to be structural bound to this ...
T. Hassenkam, M. T. Rosing
doaj   +1 more source

Geology and depositional environment of metasediments in Taman Agropolitan Rantau Manis, Gua Musang, Kelantan [PDF]

open access: yes, 2019
The study area is located at the southeast part of Gua Musang that bounded by longitude E 102̊ 04 18’.88” to E 102̊ 07' 02. 28" and the latitude is N 04̊ 58' 43.27" to N 04̊ 56' 01. 99". The focused of this research study is to produce geological map of
Syahidatul Khazidah Azahan,
core  

Home - About - Disclaimer - Privacy