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SUMMARY:A structural and geochemical analysis of the Karoo sedimentary roc
 ks along dolerite dyke and sill contacts with implications on shale gas po
 tential
DTSTART;VALUE=DATE-TIME:20141001T081000Z
DTEND;VALUE=DATE-TIME:20141001T082000Z
DTSTAMP;VALUE=DATE-TIME:20261006T160222Z
UID:indico-contribution-4004@events.saip.org.za
DESCRIPTION:Speakers: Vhuhwavhohau Nengovhela (Nelson Mandela Metropolitan
  University)\nThe main Karoo basin sedimentary sequence covers an approxim
 ate area of 700 000km2\, and attains a thickness of more than 5Km. The emp
 lacement of the Karoo Large Igneous Province (LIP) through dolerite dykes 
 and sills\, and lava flows (ca 183Ma) led to extensive devolitilization\, 
 metasomatism\, and out-gassing of approximately 2000Gt of carbon dioxide a
 nd methane into the atmosphere. The effects of these intrusive rocks chall
 enges shale gas reserves in Karoo Basin. \nThe purpose of this study is to
  address the effect of dolerite intrusions on the Karoo sedimentary strata
  along contact aureoles\, so as to understand the Pressure-Temperature (P/
 T) conditions that prevailed at the time of contact metamorphism and ultim
 ately the effect on shale gas content. Field mapping and sampling of conta
 cts will be conducted along a transect from the Eastern Cape coastline to 
 the basaltic outcrops. The changes in mineralogy of the host rocks\, therm
 al maturity\, and fluid inclusion chemistry will be investigated using ana
 lytical techniques such as SEM\, TEM\, and fluid inclusion microthermometr
 y on samples collected along contact aureoles. \nThe results of this study
  will assist in quantifying the effects of dolerite intrusions on the Karo
 o sediments in the Eastern Cape Province\; it will also shed light to P/T 
 conditions prevailing at the time of magmatic activity and the subsequent 
 effects on shale gas potential. \n\nKEY WORDS: Karoo Basin\, dolerite dike
 s and sills\, contact metamorphism\, gas content.\n\nhttps://events.saip.o
 rg.za/event/40/contributions/4004/
LOCATION:Matjiesfontein's Lord Milner Hotel Conference Room\, Matjiesfonte
 in Station
URL:https://events.saip.org.za/event/40/contributions/4004/
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