GEOLOGY

EARTH SCIENCE

SEDIMENTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Name one size of sediment that can make breccia or conglomerate.
A
Clay
B
Pebble
C
Sand
D
None of the above
Explanation: 

Detailed explanation-1: -Conglomerates contain at least 30% of rounded to subangular clasts larger than 2 mm (0.079 in) in diameter, e.g., granules, pebbles, cobbles, and boulders. However, conglomerates are rarely composed entirely of gravel-size clasts.

Detailed explanation-2: -breccia, lithified sedimentary rock consisting of angular or subangular fragments larger than 2 millimetres (0.08 inch). It differs from a conglomerate, which consists of rounded clasts.

Detailed explanation-3: -Conglomerate is composed of particles of gravel, that is to say of particles of greater than 2 mm in diameter, consisting, with increasing size, of granules, pebbles, cobbles, and boulders.

Detailed explanation-4: -A clastic rock made of particles larger than 2 mm in diameter is either a conglomerate or breccia. A conglomerate has rounded clasts while a breccia has angular clasts. Since water transport rapidly rounds large clasts, breccias normally indicate minimal transport.

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