A geologist is looking at deposits along a river below a large volcano. She finds large boulders mixed with sand and mud, and all of the material is comprised of volcanic rocks, particularly the mud which is volcanic ash. She quickly realizes these deposits represent an ancient ________.
a. rock avalanche
b. earthflow
c. lahar
d. slump
c. lahar
Environmental & Atmospheric Sciences
You might also like to view...
The ________ scale is used to establish categories of hurricane intensity
A) Fujita B) Johnson-Hildebrandt C) Stormfury D) Saffir-Simpson
Environmental & Atmospheric Sciences
Which type of reef is separated from the coast of an island by a shallow lagoon?
a. barrier reef b. longshore reef c. atoll reef d. fringing reef e. active-margin reef
Environmental & Atmospheric Sciences
Although all compositions are represented, most plutons are ____ rocks
A)felsic B)intermediate C)mafic D)pyroclastic E)basaltic
Environmental & Atmospheric Sciences
Richard Florida's research identified a relationship between the distribution of
A) talent and cultural diversity. B) central places. C) talent and economic prosperity. D) rural and urban settlements. E) business and consumer services.
Environmental & Atmospheric Sciences