How do you do this problem ?

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How do you do this problem ?

Which of the following is not a feature of sedimentary rocks?
ripple marks
porphyritic texture
stratification
concretions

2007-06-09 06:47:28 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Engineering

2 answers

porphyritic texture

all the others are be characteristics of rock formed in water (sedimentary)

2007-06-09 07:38:54 · answer #1 · answered by tlbs101 7 · 0⤊ 0⤋

sedimenatry means layers of materials compacted,heat to form rocks.
therefore the features ripple marks,strtification (layers),concreteion (compacted by heat & pressure).
Porphytric texture can be found in igneous rocks which cooled in the crust.

2007-06-09 14:56:51 · answer #2 · answered by SASHI F 2 · 0⤊ 0⤋