While hiking in the Grand Canyon of northern Arizona, you stop and observe an outcrop that exposes three different sedimentary rock types. On the bottom is a layer of shale, which is overlain by a layer of limestone, which is in turn overlain by a layer of sandstone. This stratigraphic sequence from bottom to top indicates a _ or a _ in sea-level occurred in this location in the past.

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09-05-2022
Geography

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While hiking in the Grand Canyon of northern Arizona, you stop and observe an outcrop that exposes three different sedimentary rock types. On the bottom is a layer of shale, which is overlain by a layer of limestone, which is in turn overlain by a layer of sandstone. This stratigraphic sequence from bottom to top indicates a _ or a _ in sea-level occurred in this location in the past.

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marvineetesh3 marvineetesh3 · Answer 1 · 2022-05-16T08:34:36+02:00

This stratigraphic sequence from bottom to top indicates a transgression or a fail in sea-level occurred in this location in the past.

What is stratigraphic sequence?

Stratigraphic sequence is defined as a subdivision of geology that tries to split and link historical deposits into crustal bound units on various scales.

This also explain these stratigraphic units in terms of differences in sediment supply and variations in the rate of change in accommodation space.

While climbing in northern Arizona's Grand Canyon, a person come across an outcrop that reveals 3 distinct rock strata types.

A layer of shale is at the bottom, followed by a layer of limestone, which is then followed by a layer of sandstone.

Therefore, geologic sequence from bottom to top suggests a former sea-level transgression or failure in this site.

Learn more about the transgression, refer to:

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