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Questions related from M. Qasim Jan
The question is rather simple. The earth has been bombarded by meteorites since the very beginning. There have been suggestions that meteorite impacts may have led to mass extinctions. Even...
26 April 2021 9,856 5 View
I read somewhere that magnetic poles of the Earth may be reversed as a consequence of very large meteorite impacts. Is there any irrefutable evidence of that? If the answer is yet, what impact can...
15 April 2021 7,141 4 View
Because of extensive lock up during the pandemic in many countries of the world, notably Europe, USA, Brazil, China and India, there was reduced use of hydrocarbons, especially due to much reduced...
16 October 2020 8,702 23 View
Modern style plate tectonics and island arcs are considered to have played an important role in the formation of the continental crust. The oldest zircons, however, seem to have formed before the...
09 June 2019 659 13 View
Silicic magma can be derived from tonalite or quartz diorite through partial melting when continental rocks are subducted or when they are ponded or intruded by mafic magma. Would the two melts...
29 November 2017 5,648 4 View
I am working on a stock of Neoproterozoic granite of the Malani Igneous suite in SE Pakistan. It is composed of a uniform granite, cut by many mafic, felsic and rhyolite dykes. In fourteen granite...
01 September 2017 3,424 1 View
The common thinking is that the globe is warming. It is very obvious that the warming would affect both the continents and oceans. In fact there is evidence that ocean waters are getting warmer....
06 November 2016 2,629 11 View
The classical stratigraphic sequence of the Salt Range contains thin flows of an ultrapotassic rock at its base. Commonly known as Khewra trap, it occurs at the top of the very late Proterozoic to...
24 May 2016 3,514 18 View
