. Slab pull occurs because subducting slabs are less mafic, and therefore less dense, than surrounding asthenosphere cooler, and therefore more dense, than surrounding asthenosphere hotter, and therefore more dense, than surrounding asthenosphere cooler, and therefore less dense, than surrounding asthenosphere 2. Solid blocks of wall rock (sometimes called country rock) may be broken off by intruding magma. not melt but instead remain as recognizable blocks called xenoliths. melt entirely and thus change the chemical composition of the intruding magma. All the possible answers are correct. be broken off during a process called stoping.

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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1. Slab pull occurs because subducting slabs are

  • less mafic, and therefore less dense, than surrounding asthenosphere
  • cooler, and therefore more dense, than surrounding asthenosphere
  • hotter, and therefore more dense, than surrounding asthenosphere
  • cooler, and therefore less dense, than surrounding asthenosphere

2. Solid blocks of wall rock (sometimes called country rock) may

  • be broken off by intruding magma.
  • not melt but instead remain as recognizable blocks called xenoliths.
  • melt entirely and thus change the chemical composition of the intruding magma.
  • All the possible answers are correct.
  • be broken off during a process called stoping.
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