28H: Gulf Trough Cores,
Coastal Georgia
By
Paul Huddlestun
Submitted 13/Jan/2024
Posted 21/April/2024
Saturday, January 13, 2024 7:55 PM
Thomas:
These are the last of the Gulf Trough cores. They were taken by Robert E. Weems and Lucy E. Edwards (2001) after I left the Survey and the State and moved to New Mexico. Lucy's contribution was to me, great. She was able to determine the age of the Ebenezer unit that I had referred to as Middle Miocene because there was almost to calcitic material in the unit so I could not determine its age. It appeared to be gradational with the underlying Coosawhatchie clay (Middle Miocene) so I had no reason not to apply its age to younger Coosawhatchie, the Coosawhatchie clearly being lower middle Miocene.
\Lucy used noncalcareous microfossils to determine its age as was Upper Miocene. That is still surprisingly similar to the Middle and Upper Miocene formations in western Florida that appeared to be very gradational. But two planktonic foram zones were missing between the two formations. That appears similar in the Atlantic area.
The next logs I send will be from the Savannah River area. The first logs I send will be from the type areas of the new formations I named. After that it will be the more diagnostic logs. There will be many but at least they don't go down to 1000 feet.
Sorry that I've been so slow in forwarding these lithologs to you but I have been adjusting to old age as well as I can and still remain relatively healthy. As I've said, "The only thing worse than getting old is not getting old." And Mary seems more gloomy about that than I do; especially that I'll be 86 tomorrow. I'll be in Georgia sometime in the not distant future and will spend at least a week with my son Aaron and his family and friends. I'll let you known when the dates are determined. Take care!
Paul
Thomas:
These are the last of the Gulf Trough cores. They were taken by Robert E. Weems and Lucy E. Edwards (2001) after I left the Survey and the State and moved to New Mexico. Lucy's contribution was to me, great. She was able to determine the age of the Ebenezer unit that I had referred to as Middle Miocene because there was almost to calcitic material in the unit so I could not determine its age. It appeared to be gradational with the underlying Coosawhatchie clay (Middle Miocene) so I had no reason not to apply its age to younger Coosawhatchie, the Coosawhatchie clearly being lower middle Miocene.
\Lucy used noncalcareous microfossils to determine its age as was Upper Miocene. That is still surprisingly similar to the Middle and Upper Miocene formations in western Florida that appeared to be very gradational. But two planktonic foram zones were missing between the two formations. That appears similar in the Atlantic area.
The next logs I send will be from the Savannah River area. The first logs I send will be from the type areas of the new formations I named. After that it will be the more diagnostic logs. There will be many but at least they don't go down to 1000 feet.
Sorry that I've been so slow in forwarding these lithologs to you but I have been adjusting to old age as well as I can and still remain relatively healthy. As I've said, "The only thing worse than getting old is not getting old." And Mary seems more gloomy about that than I do; especially that I'll be 86 tomorrow. I'll be in Georgia sometime in the not distant future and will spend at least a week with my son Aaron and his family and friends. I'll let you known when the dates are determined. Take care!
Paul