10 Answered Questions for the topic stratigraphy

07/05/19

What are 'articulate shells'?
I can not really find a definition, not even in a geologic dictionnary: What are articulate (resp. inarticulate) shells? To be more specific, the term is related to tsunami deposits (tsunamite).
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06/16/19

What are 'articulate shells'?
I can not really find a definition, not even in a geologic dictionnary: What are articulate (resp. inarticulate) shells?To be more specific, the term is related to tsunami deposits (tsunamite).
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06/09/19

Methods and Software for Interpolating/Modelling of Stratigraphic Well Data in 2D/3D?
I have some geologic well data. The lithologies have been interpreted, and stratigraphic columns have been drawn. The columns have been adjusted for elevation, and correlation has been done between... more
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05/19/19

Determining a rock age using volcanic ash layer?
I wanted to know if volcanic ash deposits found in the geologic record are most useful in correlating the age of rock layers if the volcanic ash was distributed over a large area during a short... more
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04/20/19

Width of strata in stratigraphic column?
I am trying to understand whether there is one "standard" meaning of the width of represented strata in stratigraphic columns, but I can find nothing online or in my geology books. I notice that,... more
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04/18/19

How to interpret the use of late and early Tertiary from older literature?
When reading older papers how should I interpret the use of "Late Tertiary" and "Early Tertiary"? Would these periods equate to Paleogene and Neogene, or was there a different accepted boundary age... more
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04/12/19

How have global sedimentation rates changed over the last billion years?
Do we have a graph of how sedimentation rates changed over time?
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Stratigraphy Geology Geologic Layers

03/27/19

How accurate is the law of superposition?
Recently I started being more interested in the rational details of the sciences (... being often challenged about them by a creationist friend) and one of the creationist 'theories' I've... more
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Stratigraphy Geology Geochronology

03/19/19

How to interpret the use of late and early Tertiary from older literature?
When reading older papers how should I interpret the use of "Late Tertiary" and "Early Tertiary"? Would these periods equate to Paleogene and Neogene, or was there a different accepted boundary... more
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Stratigraphy Geology Measurements

03/18/19

Width of strata in stratigraphic column?
I am trying to understand whether there is one "standard" meaning of the width of represented strata in stratigraphic columns, but I can find nothing online or in my geology books.I notice that,... more
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Expert Answers •1

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