BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Tendenci - The Open Source AMS for Associations//Tendenci Codeba se MIMEDIR//EN BEGIN:VEVENT DESCRIPTION:--- This iCal file does *NOT* confirm registration.\nEvent det ails subject to change. ---\nhttps://www.swsaapg.org/events/32/\n\nEvent T itle: PALEOCENE-EOCENE DRAWDOWN AND REFILL OF THE GULF OF MEXICO – CONCE PT HISTORY AND STATUS\nStart Date / Time: Apr 16, 2014 12:30 PM US/Central \nLocation: Brookhaven Country Club\nSpeaker: Joshua H. Rosenfeld\nGoogle\ nhttp://maps.google.com/maps?q=3333+Golfing+Green+Drive,Dallas,Texas,75234 \n\nForecast\nhttp://www.weather.com/weather/monthly/75234\n\n\n \n \n \n Paleocene-Eocene Drawdown and Refill of the Gulf of Mexico &ndash\; C oncept History and Status\n \n \n \n \n DGS International Group Di nner Meeting\n Register Now!\n\n Presentation by:\n Joshua H. Rosenf eld\n Independent Geologist\n\n Wednesday, April 16, 2014\n\n 5:30pm Social Hour\n 6:30pm Dinner\n 7:30pm Presentation\n\n at Brook haven Country Club\n 3333 Golfing Green Drive, Dallas, TX 75234\n\n R egister today online at www.dgs.org or\n By email to Linnea.Castillo@pxd .com\n\n DGS Members $30\n Non-Members $35\n Students $5\n Walk-In s $35\n No shows will be billed!\n\n Paleocene-Eocene Drawdown and Ref ill of the Gulf of Mexico &ndash\; Concept History and Status\n\n Rosenf eld and Pindell (2002, 2003) hypothesized that late Paleocene-early Eocene docking of the northward migrating Caribbean Plate blocked the 200 km str ait between the Florida/Bahamans Block and Yucatan, thereby isolating the Gulf of Mexico from the world ocean. Within several thousand years, net e vaporation in the Gulf lowered its level by about 2,000 meters and formed a land bridge across the eastern Gulf that encompassed Yucatan, Florida, C uba, and the Bahamas. Formation of the land bridge was enhanced by isosta tic uplift of the basin&rsquo\;s margins as sea level dropped. After abou t 1 Ma of isolation, reconnection with the world ocean resulted in energet ic refill of the basin that cut a deep thalweg between Florida and Cuba. This relatively short duration drawdown explains many phenomena unique to this period of Gulf history, including:\n\n \n &bull\; the excavation of deep canyons across contemporary continental shelves and slopes: e.g., Yoakum, St. Landry, Chicontepec/Bejuco-La Laja paleocanyons, and the many canyons found along the lower continental slopes of Florida and Yucatan (d iscussed below)\n &bull\; the sudden deposition, and equally sudden cess ation of a widespread, thick, high net sand blanket in the deep Gulf Basin \n &bull\; salt deposition in the barred Tertiary Veracruz Basin\n &bu ll\; an unconformity in the eastern, carbonate-dominated Gulf Basin\n \ n\n The drawdown is coeval with the worldwide Paleocene-Eocene thermal m aximum (PETM) possibly triggered by the release of voluminous methane from destabilized hydrates and breached conventional reservoirs of the Gulf at low stand.\n\n \n The drawdown also profoundly affected the petroleum geology of the Gulf of Mexico, most obviously by deposition of basal Wilc ox &ldquo\;Whopper Sand&rdquo\; reservoirs in U.S. and Mexican waters. Fur ther petroleum ramifications include porosity enhancement by fresh water i nfiltration and leaching of reefal carbonates of the Golden Lane Atoll and deep-water carbonate detritus reservoirs in the Poza Rica Trend and Campe che Sound K/T breccias.\n\n \n Although a &ldquo\;smoking gun&rdquo\; has not yet been recognized that induces general acceptance of the Paleoce ne-Eocene Gulf drawdown, convincing evidence may be on the deep-water slop es of western Florida and northeastern Yucatan where sinkholes are present , and steep-walled canyons are observed resembling those along eroded esca rpments in preset-day sub-aerial environment .\n\n \n With increased i nvestigation of the eastern Gulf, the author is confident that definitive evidence will be found that either supports or eliminates the proposed dra wdown. Meanwhile, explorers are encouraged to include the idea among their working hypotheses.\n\n Joshua H. Rosenfeld\n\n Josh received his Bac helor&rsquo\;s degree in Geology from the City University of New York in 1 960. He taught High School Earth Science for two year before being drafte d by the US Army stationed in Guatemala, Central America from 1963 to 1966 as a Terrain Reconnaissance Specialist.\n\n \n After discharge, he sp ent another 10 years Guatemala as a Mining Geologist, and eventually as Ch ief Geologist for the Guatemalan Ministry of Economy. During this time, h e also earned his Master&rsquo\;s degree from the University of Miami with thesis work on the 1976 Guatemala earthquake.\n\n \n Josh returned to the US in 1977 at the State University of N.Y. at Binghamton, earning his doctorate in 1980 on the &ldquo\;Origen and Emplacement of the Santa Cruz Ophiolite in Eastern Guatemala&rdquo\;. He was then hired by Amoco (now BP), working projects around the Gulf of Mexico and on New Ventures in La tin America. He retired from Amoco/BP in 1999 after being the company&rsqu o\;s Exploration Manager in Colombia. He then worked on business developm ent in Mexico for Veritas (now CGG) until 2001 before moving to Granbury, Texas where he now ponders geological matters and occasionally consults on international mining and petroleum projects.\n \n \n \n\n\n\nRegister today online at www.dgs.org\n\n\n--- This iCal file does *NOT* confirm reg istration.Event details subject to change. ---\n\n--- By Tendenci - The Op en Source AMS for Associations ---\n UID:uid32@swsaapg.org SUMMARY:PALEOCENE-EOCENE DRAWDOWN AND REFILL OF THE GULF OF MEXICO – CONCEPT HISTORY AND STATUS DTSTART:20140416T173000Z DTEND:20140416T203000Z CLASS:PUBLIC PRIORITY:5 DTSTAMP:20260409T085030Z TRANSP:OPAQUE SEQUENCE:0 LOCATION:Brookhaven Country Club X-ALT-DESC;FMTTYPE=text/html:
--- This iCal file does *NOT* confirm re gistration.Event details subject to change. ---

Event Title: PALE OCENE-EOCENE DRAWDOWN AND REFILL OF THE GULF OF MEXICO – CONCEPT HISTORY AND STATUS

https://www.swsaapg.org/events/32/

Wh en: Apr 16, 2014 12:30 PM US/Central
Speaker: Joshua H. Rosenfel d

Brookhaven Country Club
3333 Golfing Green Drive
Da llas, Texas 75234
http://maps.google.com/maps?q=3333+Golfing+Gre en+Drive,Dallas,Texas,75234

Forecast: http://www.weather.c om/weather/monthly/75234


Register today online at www.dgs.org

-- - This iCal file does *NOT* confirm registration.Event details subject to change. ---
--- Tendenci®\; Software by tendenci.com - The Open Source AMS for Associations ---< /div> BEGIN:VALARM TRIGGER:-PT30M ACTION:DISPLAY DESCRIPTION:Reminder END:VALARM END:VEVENT END:VCALENDAR

Paleocene-Eocene Drawdown and Refill of the Gulf of Mexico &n dash\; Concept History and Status

DGS International Group Dinner Meeting Register Now!

Presentation by:
Joshua H. Rosenfeld
Indepen dent Geologist

Wednesday, April 16, 2014

5:30pm \; \; Social Hour
6:30pm \; \; Dinner
7:30pm&n bsp\; Presentation

at Brookhaven Coun try Club
3333 Golfing Green Drive, Dallas, TX \; 75234

Register today onlin e at www.dgs.org or
By email to Linnea.Castillo@pxd.com

DGS Members $30
Non-Members $35
Students $5
Walk-Ins $35
No shows will be billed!

Paleocene-Eocene Drawdown and Refill of the Gulf of Mexico &ndash\; Conce pt History and Status

Rosenfeld and Pinde ll (2002, 2003) hypothesized that late Paleocene-early Eocene docking of t he northward migrating Caribbean Plate blocked the 200 km strait between t he Florida/Bahamans Block and Yucatan, thereby isolating the Gulf of Mexic o from the world ocean. \; Within several thousand years, net evaporat ion in the Gulf lowered its level by about 2,000 meters and formed a land bridge across the eastern Gulf that encompassed Yucatan, Florida, Cuba, an d the Bahamas. \; Formation of the land bridge was enhanced by isostat ic uplift of the basin&rsquo\;s margins as sea level dropped. \; After about 1 Ma of isolation, reconnection with the world ocean resulted in en ergetic refill of the basin that cut a deep thalweg between Florida and Cu ba. \; This relatively short duration drawdown explains many phenomena unique to this period of Gulf history, including:


&bull\; the excavation of deep canyons across contemporary co ntinental shelves and slopes: e.g., Yoakum, St. Landry, Chicontepec/Bejuco -La Laja paleocanyons, and the many canyons found along the lower continen tal slopes of Florida and Yucatan (discussed below)
&bull\; the sudden deposition, and equally sudden cessation of a widespread, thick, high net sand blanket in the deep Gulf Basin< br> &bull\; salt deposition in the barred Tertiary Veracruz Bas in
&bull\; an unconformity in the eastern, carbona te-dominated Gulf Basin
 \;

The drawdown is coeval with the worldwide Paleocene-Eocene thermal maxim um (PETM) possibly triggered by the release of voluminous methane from des tabilized hydrates and breached conventional reservoirs of the Gulf at low stand.


The drawdown also profoundly a ffected the petroleum geology of the Gulf of Mexico, most obviously by dep osition of basal Wilcox &ldquo\;Whopper Sand&rdquo\; reservoirs in U.S. an d Mexican waters. Further petroleum ramifications include porosity enhance ment by fresh water infiltration and leaching of reefal carbonates of the Golden Lane Atoll and deep-water carbonate detritus reservoirs in the Poza Rica Trend and Campeche Sound K/T breccias.


< strong>Although a &ldquo\;smoking gun&rdquo\; has not yet been recognized that induces general acceptance of the Paleocene-Eocene Gulf drawdown, con vincing evidence may be on the deep-water slopes of western Florida and no rtheastern Yucatan where sinkholes are present, and steep-walled canyons a re observed resembling those along eroded escarpments in preset-day sub-ae rial environment .


With increased inve stigation of the eastern Gulf, the author is confident that definitive evi dence will be found that either supports or eliminates the proposed drawdo wn. Meanwhile, explorers are encouraged to include the idea among their wo rking hypotheses.

Joshua H. Rosenfeld

Josh received his Bachelor&rsquo\;s degree in Geology from the City University of New York in 1960. \; He taught Hi gh School Earth Science for two year before being drafted by the US Army s tationed in Guatemala, Central America from 1963 to 1966 as a Terrain Reco nnaissance Specialist.


After discharge , he spent another 10 years Guatemala as a Mining Geologist, and eventuall y as Chief Geologist for the Guatemalan Ministry of Economy. \; During this time, he also earned his Master&rsquo\;s degree from the University of Miami with thesis work on the 1976 Guatemala earthquake.


Josh returned to the US in 1977 at the State Univers ity of N.Y. at Binghamton, earning his doctorate in 1980 on the &ldquo\;Or igen and Emplacement of the Santa Cruz Ophiolite in Eastern Guatemala&rdqu o\;. \; He was then hired by \; Amoco (now BP), working projects a round the Gulf of Mexico and on New Ventures in Latin America. He retired from Amoco/BP in 1999 after being the company&rsquo\;s Exploration Manager in Colombia. \; He then worked on business development in Mexico for Veritas (now CGG) until 2001 before moving to Granbury, Texas where he now ponders geological matters and occasionally consults on international min ing and petroleum projects.