Amboy Crater is located in the Mojave desert in California off of Interstate 40 just West of the town called Amboy. Amboy lava field is made-up mostly of vesicular pahoehoe. It covers 43.5 sq miles (70 sq km). The oldest lava flows are found in the eastern and southeastern parts of the field. These old flows have many depressions (up to 32.8 ft (10 m) around and several meters deep) formed from collapsing. Two other types of flows can also be found in Amboy: platform units and vent lavas. Platform units are isolated parts of the flow with fairly flat surfaces. Vent lavas are found over some of the vents of the Amboy lava field. They are made of relatively dense pahoehoe. Separate craters are found in the middle of the lava ponds where lava may have drained back into the vents. The surface of the field is covered with wind-blown material. These deposits get thicker towards the southwest.
Wood, Charles A. and Jurgen, Kienle, "Volcanoes of North America," Cambridge University Press, Cambridge, 354 pp., 1990.
Parker, R.B., 1963. Recent Volcanism at Amboy Crater,San Bernardino County,California: Special Report 76, California Division of Mines and Geology
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