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se MIMEDIR//EN
BEGIN:VEVENT
DESCRIPTION:--- This iCal file does *NOT* confirm registration.\nEvent det
ails subject to change. ---\nhttps://www.swsaapg.org/events/162/\n\nEvent
Title: NTGS Monthly Luncheon\nStart Date / Time: Nov 20, 2025 11:30 AM US/
Central\nLocation: The Forum\nSpeaker: Bill Stephens\nGoogle\nhttp://maps.
google.com/maps?q=2120+Speedway+Avenue,Wichita Falls,TX,76308\n\nForecast\
nhttp://www.weather.com/weather/monthly/76308\n\n\nTitle: Strawn Clastic D
epositional Systems of the northern Eastern Shelf, with Observations on Re
gional Petroleum Sourcing, and an Update on JC (Strawn Upper) Field\nDurin
g the Desmoinesian stage a regional shelf along the northern &ldquo\;Easte
rn Shelf&rdquo\; had not yet developed. Large scale carbonate buildups, su
ch as the King Platform and Anson Bank, ultimately link together to create
the true Eastern Shelf by mid-Missourian time.\nRegional sedimentation wa
s controlled by a low angle ramp dipping west-southwest at approximately 1
-2 degrees towards the incipient Midland Basin. Ouachita and Muenster-Wich
ita derived clastics rapidly prograded westward as elongate deltas, deposi
ting fluvio-deltaic, mixed near shore, and deeper marine facies. Deeper de
posits, up to 100M water depths, have been observed in atypical restricted
depressions, and as suspected submarine channels. The strong cyclicity ob
served in both clastic and carbonate deposits was likely driven by glacioe
ustacy. Individual cycles are postulated to represent 200,000-400,000 year
s of sedimentation.\nFor Atoka through Strawn reservoirs, there are two pr
imary petroleum source provinces. An eastern, Fort Worth Basin Barnett sou
rce, and a western, Midland/Permian Basin source. These two systems are no
t observed to overlap. There are additional, localized source provinces th
at can been demonstrated to source Atoka and Cisco-Canyon reservoirs.\nThi
s discussion will briefly review the two primary petroleum provinces sourc
ing Strawn-age reservoirs, analyze specific Strawn cyclical elements studi
ed in King County, and examine the change in depositional vectors for Stra
wn sandstone cycles through time along the west-southwest pivoting Bend Ar
ch.\nAdditionally, the NBX operated JC (Strawn Upper) Field, the largest c
onventional oil field discovered on the Eastern Shelf this century, will b
e reviewed and discussed.\nDetails &\; Register Here!\n \n\n--- This iC
al file does *NOT* confirm registration.Event details subject to change. -
--\n\n--- By Tendenci - The Open Source AMS for Associations ---\n
UID:uid162@swsaapg.org
SUMMARY:NTGS Monthly Luncheon
DTSTART:20251120T173000Z
DTEND:20251120T190000Z
CLASS:PUBLIC
PRIORITY:5
DTSTAMP:20260414T210646Z
TRANSP:OPAQUE
SEQUENCE:0
LOCATION:The Forum
X-ALT-DESC;FMTTYPE=text/html:--- This iCal file does *NOT* confirm re
gistration.Event details subject to change. ---
Event Title: NTGS
Monthly Luncheon
https://www.swsaapg.org/events/162/
When: Nov 20, 2025 11:30 AM US/Central
Speaker: Bill Stephe
ns
The Forum
2120 Speedway Avenue
Wichita Falls, TX 7
6308
http://maps.google.com/maps?q=2120+Speedway+Avenue,Wichita
Falls,TX,76308
Forecast: http://www.weather.com/weather/mo
nthly/76308
Title: Strawn Clastic Depo
sitional Systems of the northern Eastern Shelf, with Observations on Regio
nal Petroleum Sourcing, and an Update on JC (Strawn Upper) Field<
/h3>
During the Desmoinesian stage a region
al shelf along the northern &ldquo\;Eastern Shelf&rdquo\; had not yet deve
loped. Large scale carbonate buildups, such as the King Platform and Anson
Bank, ultimately link together to create the true Eastern Shelf by mid-Mi
ssourian time.
Regional sedimentation was controlled by a low angle
ramp dipping west-southwest at approximately 1-2 degrees towards the inci
pient Midland Basin. Ouachita and Muenster-Wichita derived clastics rapidl
y prograded westward as elongate deltas, depositing fluvio-deltaic, mixed
near shore, and deeper marine facies. Deeper deposits, up to 100M water de
pths, have been observed in atypical restricted depressions, and as suspec
ted submarine channels. The strong cyclicity observed in both clastic and
carbonate deposits was likely driven by glacioeustacy. Individual cycles a
re postulated to represent 200,000-400,000 years of sedimentation.
For Atoka through Strawn reservoirs, there are two primary petroleum sourc
e provinces. An eastern, Fort Worth Basin Barnett source, and a western, M
idland/Permian Basin source. These two systems are not observed to overlap
. There are additional, localized source provinces that can been demonstra
ted to source Atoka and Cisco-Canyon reservoirs.
This discussion wi
ll briefly review the two primary petroleum provinces sourcing Strawn-age
reservoirs, analyze specific Strawn cyclical elements studied in King Coun
ty, and examine the change in depositional vectors for Strawn sandstone cy
cles through time along the west-southwest pivoting Bend Arch.
Addi
tionally, the NBX operated JC (Strawn Upper) Field, the largest convention
al oil field discovered on the Eastern Shelf this century, will be reviewe
d and discussed.
\;
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*NOT* confirm registration.Event details subject to change. ---
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