Ahmed Morad

11 Questions 13 Answers 0 Followers

Questions related from Ahmed Morad

Can sedimentary carbonate be sandwiched within older meta-volcanics without uncornformity strata ?

Dear Colleagues., I ask about a very strange case that not very common but maybe some body faced it or suggest a reliable interpretation. Is it possible to find diagenetic unmetamorphosed...

13 August 2023 7,574 9 View

What is the best usage of mafic Xenolithic fragments in felsic volcanic rocks ?

Hello Dear professors and colleagues I have a felsic volcanic rock rich in mafic xenoliths and now thinking of the best way from sample preparation to yield best results ...any suggestion? 2-...

06 April 2022 8,392 2 View

Why is the "A review of chlorite" of Hey 1964 is never showed on google scholar ?

i want to classify my chlorite data on Hey's famous chart , but i can't even find this published work online even well cited papers and theses have cited it as : Hey, W.H., 1964. A review of...

16 April 2018 1,762 4 View

Question about Chemical Index Of Alteration (CIA)?

Hello Profs and collages i am asking if i can apply the relation CIA = Al2O3/Al2O3+CaO+Na2O+K2O for meta pelitic rocks such as schists and phylites to indicate that chemical weathering...

25 February 2018 5,242 4 View

Can alkali feldspar exhibit oscillatory zoning ?

Hello professors and colleges while checking a trachyte thin section from lehrberg , seven hills , Germany i found that almost all phenocrysts are showing oscillatory zoning . is it possible...

21 November 2017 7,051 21 View

What is the relation between 3 different lithologies on basis of tectonic settings ??

hello colleagues and my professors i want to ask what would be the tectonic shifting ( change from setting to another ) that may occur to lead to the formation of volcanic rocks + red beds ( More...

04 April 2017 2,992 6 View

Pictures of mysterious gem for expert gemologists ?

a friend asked me about the fantastic gem stone and i was very interested about it , if any expert gemologist can tell me the name of it i will be very grateful . it's a dark brown solid sphere...

08 November 2016 4,645 5 View

What is the relation between trace elements concentration and the henry's law ?

what is the relation between trace elements concentration and the henry's law ? i have read that the trace elements concentrate in melt - mineral according to henrys law but i failed to find any...

26 July 2016 5,652 7 View

Can we differentiate between calc-alkaline and tholeiitic basalts ?

i read before that the trends of calc alaklic and tholeiitic magmas are similar for basalts and can't be differentiated except for more fractionated rocks like andesites and dacites . but,now i...

31 May 2016 4,242 14 View

Can we use Indices of alteration WIS or CIA on metapelites ?

Hello Professors and colleagues I am studying Neoproterozoic meta-sediments can i apply the indices of alteration on it or it has to be on sedimentary rocks only ? Thanks in advance

01 January 1970 2,351 6 View

How could we best express in a tectonic schematic diagram the metamorphism of Sediments overlying subducting slab ?

Hello Professors and colleagues I am trying to draw a detailed Tectonic schematic cross section for a subducting slab focusing mainly on the transformation of shales and carbonates into...

01 January 1970 9,056 7 View