Geology rock identification - written

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Last updated: April 1, 2025

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Hint	Answer
pumice	/
rhyolite	/
andesite	/
obsidian	/
scoria	/
basalt	/
gabbro	/
dolerite	/
microgranite	/
granite	/
diorite	/
microdiorite	/
peridotite	/
granodiorite	/
breccia	/
conglomerate	/
sandstone	/
shale	/
mudstones	/
clay	/
greywacke	/
desert sandstone	/
orthoquartzite	/
arkose	//
limestone	/
wackestone	/
packstone	/
grainstone	/
fossiliferous limestone	/
chalk	/
oolitic limestone	//
tillite	/
varves	/
ash	/
rock tuff/tuff	/
lapilli	//
lapilli tuff	/
bombs/blocks	/
ignimbrite	/
agglomerate	/
polymictic conglomerate	/
monomictic conglomerate	/
oligomictic conglomerate	/
alluvial fan breccia	/
alluvial fan conglomerates	/
channel conglomerates/sandstones	//
playa lake evaporites	/
channel lag	/
flood plain clay/silt	/
wadi conglomerate	/
alluvial fan arkose	/
aeolian sandstones	/
reef limestone	/
micritic limestone	/
turbidites	/
slate	/
phyllite	/
schist	/
gneiss	/
spotted rock	/
metaquartzite	/
marble	/
hornfels	//
carboniferous chondrites	/
iron meteorites	/
stony meteorites	/
kimberlites	/
mylonite	/
fault breccia	/

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