शैल संरचना में एक प्राकृतिक फ्रैक्चर जिसके अनुदिश विपरीत दीवारें एक-दूसरे के सापेक्ष विस्थापित या खिसक गई हों, उसे ________ कहा जाता है।

Which one among the following is NOT an example of detrital (clastic) sedimentary rocks?

Which of the following is an example of a hypabyssal rock?

Which of the following rocks are formed due to the alteration of pre-existing sedimentary or igneous rocks under high heat and pressure?