The blue arrows indicate a different type of rock, ragged ones with sharp edges, hypothesized to have been ejected when nearby craters formed or volcanoes erupted.
(a different type of rock; hypothesized; ) (volcanoes; erupted; ) (The blue arrows; indicate; a different type of rock, ragged ones with sharp edges, hypothesized to have been ejected) Context(The blue arrows indicate,List([0, 24))):(a different type of rock, ragged ones with sharp edges, hypothesized; to have been ejected; T:when nearby craters formed or volcanoes erupted)
The blue arrows indicate,List([0, 24))
a different type of rock volcanoes The blue arrows a different type of rock, ragged ones with sharp edges, hypothesized
hypothesized erupted indicate to have been ejected
a different type of rock, ragged ones with sharp edges, hypothesized to have been ejected
T:when nearby craters formed or volcanoes erupted