CGMW
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USGS
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Quarternary
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Neogene
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Paleogene
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Cretaceous
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Jurassic
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Triassic
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Permian
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Pennsylvanian
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Mississippian
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Devonian
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Silurian
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Ordovician
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Cambrian
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“preCambrian”
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Hopefully no rocks on your map from the Cretaceous, Mississippian, or Cambrian come in contact with each other, they would be difficult to separate.
CGMW
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USGS
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Cretaceous
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Mississippian
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Cambrian
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How about Jurassic, Pennsylvanian, and Silurian?
Why even use colors to distinguish different Formations or Series if they are so similar to others?
Are the old Standards to be changed?
The USGS published some suggestions back in 2005.
CGMW
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USGS
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Jurassic
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Pennsylvanian
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Silurian
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Why even use colors to distinguish different Formations or Series if they are so similar to others?
Are the old Standards to be changed?
The USGS published some suggestions back in 2005.
And the Geologic Data Subcommittee (GDS) of the Federal Geographic Data Committee (FGDC)
published standards for GIS in 2008.
Are these going to change? Will they use the random color system of the CGMW?
Some pages (just a few I've run across so far) already using the CGMW colors:
This map (from SVP) was modified from an existing map and strat column with the new colors.
Macrostrat using the new colors.
I think it is unfortunate that these new colors are being adopted, and it seems to me a step backwards.
Whine over :(
Are these going to change? Will they use the random color system of the CGMW?
Some pages (just a few I've run across so far) already using the CGMW colors:
This map (from SVP) was modified from an existing map and strat column with the new colors.
Macrostrat using the new colors.
I think it is unfortunate that these new colors are being adopted, and it seems to me a step backwards.
Whine over :(
One can only hope that the new fashion doesn't follow SVP's example of using the exact same colour to map contiguous formations (e.g. six Jurassic formations all mapped to the same shade of blue)!
ReplyDelete--Howard