Shivangi posted an Question
September 02, 2021 • 18:50 pm 30 points
  • IIT JAM
  • Geology (GG)

4b. the sedimentary rock dark gray in colour, composed of mainly the rock fragments with more feldspar than quartz is knowrn as: a arkose b. sub-arkose d. quart

4B. The sedimentary rock dark gray in colour, composed of mainly the rock fragments with more feldspar than quartz is knowrn as: A Arkose B. Sub-arkose D. Quartz arenite C. Gray-wacke

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    Mayank vedwal Vedwal Best Answer

    answer should be greywacke.. because graywacke is dark grey color rock which is mainly composed of rock fragments. U can check it in pettijohn's classification of sandstone that in greywacke rock percentage of quartz is less than (feldspar+lithic fragments).

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