Metallogeny Research Papers - Academia.edu (original) (raw)

Caspian Sea region is of fantastic worldwide importance, surely. We present some geo-materials on this outstanding region (ex., Volozh, Leonov et al., 1999, 2010; Khain, Bogdanov, 2003; Golubov et al., 2008; Koronovsky et al., 2005, and many others). Works on West Baluchestan were led by outstanding regional trio - Dr. E. Romanko, Dr. A. Houshmandzadeh, and Dr. M.A.A. Nogole-Sadat. Such data could be noted after joint geo-analysis and discussions:
1. A very important northeastern (NE) tectonic-magmatic-metallogenic (by E. Romanko et al.)-Oil (HC – hydrocarbons), at least, Miocene - Recent zonation exists in the region studied. No serious doubts about African superplume (ex., known tomography by Bull, McNamara, Ritsema, 2009 etc.) - these processes relation. Such different zonation effects could be stressed as:
2. Neogene - Recent intraplate magma due to African superplume activity. Magma products are: subalkaline-alkaline igneous rocks – Ca-rich igneous rocks – up to real carbonatites of Hanneshin, Afghanistan. There are data about Sr, Ca etc. input in upper younger Caspian Sea sediments from the lower older magmatites. There is such magmatic trend as: Quaternary carbonatites, Hanneshin, Helmand block, Afghanistan – Ca-rich volcanites with Cao up to 34.9% - Ca-rich volcanites with CaO up to 10.2% - trachyandesites with CaO 7.1%, Baluchistan.
3. Oligocene-Recent calk-alkaline subduction-related magma-antipode (intrusive, extrusive and volcaniclastic rocks). Relation with African superplume is not formally necessary, but there are some data about warmer calk-alkaline rocks here, ex., fairly warm melt inclusions in them (Romanko, Prokofiev et al., 2012)
4. Decreasing of quakes activity from South to the Middle Caspian Sea, at
least (Khain, Bogdanov, 2003 etc.). Also, famous Prof V. Khain stressed HC decreasing
from Persian Gulf? To North Caspian Sea (Khain et al., 2003).
5. Oil - gas-condensate/gas zonation from the west to the east of the Caspian Sea. It could be
in relation with NE superplume activity meaning such limit as Caucasus barrier, which limits HC moving to the northeast and rotates them to the east.
6. Other HC zonation is: HC in the old rocks, since Devonian up to Paleogene - North
Caspian Sea vs. HC in Triassic-Jurassic, Paleogene rocks in the Middle Caspian Sea, and in Low Pliocene (N2) rocks - South Caspian Sea. It could be in agreement with northeastern superplume activity decreasing. Fairly rare coal – HC coexisting could be also in agreement with a long strong degassing in this geo-warm region. It could be proposed that the age of all (or most) Caspian Sea HC is similar or maybe simply one despite regularly older HC-bearing layers to the north, as said above. Also, giant HC resources in Saudi Arabia – Caspian region could be related with the very African superplume activity. Important, that new chemical data exist as: more than 500:1 for NonOrganic carbon vs organic carbon. NonOrganic oil could be close related to organic one.
7. All HC localization is in agreement with a regional general geology. No problem to explain position of a concrete HC field on the geological map. Deep/ endogenic H2 plus C from sediments give us CH4 without serious problems. Also, deep CO2 and even some CH4 could help in economic oil/gas processes.
8. There is a good correlation: structural map-HC maximum, ex. Aral Sea, West Siberia etc.
It is in agreement with a young or very young concrete HC localization despite the any
age of host rocks with these HC.
9. Joint geological-geophysical… analysis is of very importance. It could help us in HC
geology, HC mobilization etc. and even in non-HC geology. Different HC zonation in the
different regions is in agreement with a young and mobile HC.
We are very grateful to B. Golubov, D. Astafiev, M. Goncharov et al., G. Gogonenkov et al., A. Timurziev, V. Evstifeev, M. Yarlykov, M. Antipov, Yu. Volozh, Yu. Leonov et al, V. Trifonov, Yu. Malinovsky, V.V. Slavinsky, A. Kasimov, M. Heidari, M. Hosseini et al.; also - to Phil Christie, R. Tobin, H. Posamentier; and A. Ampilov, M. Ivanov†, O. Kalmykov, and A. Nikishin etc. (famous Lomonosov MSU, Moscow) for their famous worldwide HC lectures and discussion. Many cordial thanks to many geo-colleagues for discussions and great help too.

We are very grateful to regional trio - Dr. E. Romanko, Dr. A. Houshmandzadeh, and Dr. M.A.A. Nogole-Sadat; also to D. Astafiev, B. Golubov, N., M. Goncharov et al., G. Gogonenkov et al., A. Timurziev, M. Yarlikov, V. Evstifeev, M. Antipov, Yu. Volozh, Yu. Leonov et al, V. Bykadorov, V. Trifonov, Yu. Malinovsky, V.V. Slavinsky, A. Kasimov, M. Heidari, M. Hosseini; also - to Phil Christie, R. Tobin, H. Posamentier; and A. Ampilov, M. Ivanov†, O. Kalmykov, and A. Nikishin etc. (famous Lomonosov MSU, Moscow) for their famous worldwide HC lectures and discussion. Many cordial thanks to many geo-colleagues for discussions and great help too.