نتایج جستجو برای: Thar Granitoids

تعداد نتایج: 1067  

Yasmin Rizvi

The basement rocks encountered in exploratory boreholes drilled for exploration and evaluation of coal deposits in Thar Parkar district, Sindh Pakistan have formed the basis for present studies. The basement complex was penetrated through eighteen boreholes at drill depth range from 112 to 279 meters. These rocks were identified in field as Pink and Grey Granites.. The basement rocks are of Ign...

2010
CAROL D. FROST RONALD FROST

We recognize eight types of ferroan granitoid that can be distinguished on the basis of major element chemistry.These include alkalic granitoids that may be metaluminous or peralkaline, alkali-calcic granitoids that may be metaluminous, peraluminous or peralkaline, calc-alkalic granitoids that may be metaluminous or peraluminous, and rare calcic ferroan granitoids. These granitoids may form by ...

2001
T. Kebede U. S. Kloetzli C. Koeberl

The Precambrian rocks in western Ethiopia consist of highand low-grade terranes intruded by granitoids with a wide compositional spectrum. The formation ages of these granitoid rocks are, so far, poorly understood. Single-grain zircon Pb/Pb evaporation and conventional U/Pb dating conducted on four granitoids places time constraints on their emplacement and tectonothermal events. Three granitoi...

2000
Suman K. De Thomas Chacko Robert A. Creaser Karlis Muehlenbachs

The early Proterozoic Taltson Magmatic Zone (TMZ) comprises the southern part of the Taltson-Thelon orogenic belt of northwestern Canada. The TMZ is dominated by 1.96–1.99-Ga I-type and 1.93–1.95-Ga S-type suites of granitoids. Previous workers attributed the formation of the I-type granitoids to subduction of oceanic crust beneath the Churchill craton in an Andean-type setting, and generation ...

2008
R H Wilde

The thermal characteristics of thar and their alpine habitat (including expanses of bare rock) were determined as a function of time throughout the night, by measurements from imagery acquired with a thermal video camera. Measurements were also made on thar in a farm environment, to determine the radiant temperature difference between their considerably hotter heads and cooler bodies. Thermal i...

2017
K. K. Sharma S. P. Mehra

This paper highlights the Thar Desert and its ecosystem. The work reviews and presents the natural condition of the Thar Desert within Rajasthan State. The diversity of the vegetation and of higher animals is discussed on the basis of earlier works and surveys. Major problems and conservation issues are presented along with their possible solutions. Recommendations are made for the protection o...

2004
GRAHAM J. HICKLING

The Himalayan thar (Hemitragus jemlahicus Smith) is an introduced ungulate pest of the alpine zone in New Zealand’s Southern Alps. Considerable money is spent attempting to mitigate their effects on indigenous flora (Tustin, 1990). Current management focuses on maintaining thar densities below specified densities by a combination of recreational, commercial, and government-funded hunting (Depar...

2005
J. P. PARKES K. G. TUSTIN

The breeding ranges of thar are described as they were in 1976 and 1984 and compared with previously described ranges in 1936, 1946, 1956 and 1966. Commercial hunting during 1972-1976 harvested about 32000 thar and along with habitat limits in some areas this slowed the rate of dispersal into new areas and eliminated thar from the periphery of their range in other areas. The rate of thar disper...

2016
Nishi Mathur Anil Vyas

Mycorrhizal technology was applied for reclamation of saline wasteland of Indian Thar Desert. For this purpose an exotic tree species Acacia colie an endemic legume of Australia was selected. Studies revealed increased biomass production and nutrient uptake of Acacia collie by native AM fungi. Different AM fungi showed their variation towards response to this tree species. However, AM fungi res...

2007
Libertv Hill

Many of the late Paleozoic granitoid plutons of the southern Appalachians are composite bodies with coarsegrained amphibole + biotite and biotite varietal facies (Speer et al., 1980). From field relations, these facies appear closely related, and multiple intrusion or differentiation comes to mind as an explanation for the relationship. In the Liberty Hill pluton, the coarse-grained central amp...

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