Alpine Tectonic-magmatic-metallogenic Peculiarities in West Baluchestan, Middle East: New Data, “Hot” Tectonics, Inclusions, Discussion, Hydrocarbons (HC), and Constraints

A satisfactory tectonic-magmatic-metallogenic correlation in the East Iran, Middle East for Alpine time was revealed in the region (mainly metallogeny – led by outstanding regional trio: Drs. E. Romanko, A. Houshmand-Zadeh, and M.A.A. Nogol Sadat). Geological northeastern zonation and “hot” tectonics due to the African superplume activity including probably slab delamination is revealed too. Strongly dominated rocks of calc-alkaline and shoshonite series deal with a known subduction of Arabian plate beneath the Central Iran block. Intraplate African superplume-related rocks are subalkaline – alkaline ones including Quaternary carbonatites in Hanneshin, Afghanistan. Tectonic-magmatic pair could be postulated here. General oil / hydrocarbons (HC) productivity decreasing to the north could be in an agreement with corresponding decreasing of African superplume activity too. Regional economic Cu-Au etc. metallogeny is mainly stipulated by a subduction mentioned.


Introduction
Middle East is geologically, economically… exclusively interesting region, however, very irregular studied. Great importance of its regional study is obvious. Metallogeny and geology of poorly studied East Iran close a very impressive Alpine -Himalayan structures junction (Khain, 2001; Khain, Leonov 1988

Methodology
Methodology of our research includes traditional general geological investigations including field works etc., then also special ones, and joint analysis of all materials available since known works led by Dr E. Romanko (E. Romanko, 1984) etc.

Results
We present new data on magmatic rocks of the region studied: dominated Paleocene -Quaternary subduction-related calc-alkaline rocks and, rare, Eocene -Oligocene shoshonitic-latitic rocks (first group) and principally other subordinate rocks younger Neogene -Quaternary intraplate subalkaline and rarely -alkaline ones (second group).
Rocks of the first group (subduction-related differentiated calc-alkaline rocks: basalts -dominated andesites -rhyolites, granodiorites, etc.) are the products of a large subduction of the Tethys lithosphere and Arabian plate beneath the Central Iran block or microplate (Fig. 1). This process is confirmed by the regional tectonic analysis, tomography by known J. Ritsema's team (Bull et al., 2009 etc.) and petrology and geochemistry (Imamverdiyev, 2000;Romanko et al., 2012; etc., Figure 1). Catastrophic earthquakes of ca. 8 M and more on the Richter scale, unfortunately, are not rare here. A recent catastrophic example is the 2003 Bam earthquake.
Formation of the antipodes -intraplate K-Na subalkaline and alkaline rocks subordinate (including real carbonatites of Afghanistan and Arabia). The second group rocks relate to the African superplume activity with the "hot" tectonics here as (as seen from Table 1 for "hot" intraplate rocks (similar for Neogene lamproites of Algeria etc. -E. Romanko et al., 1988;Romanko et al., 2012;etc.). They are trachybasalts, basic trachyandesites, and trachyandesites on classification and discriminated digrams (Bogatikov et al., 1987;Luchitsky, 1985, Yarmolyuk et al., 2001 and seen from Tables 1 and 6. Data in Table 5 are in satisfactory agreement on rock-minerals relation. No data about serious post-magmatic processes exist. Ca-rich minerals are in a good agreement with carbonatites of Hanneshin, Afghanistan, and carbonatites-related rocks. These rocks, in contrast to the calc-alkaline, characterized by an enrichment of both LILIE -K, Rb, Ba etc. and HFSE -Nb, Y, Ta, Zr, Ti, P etc. with a characteristic high Eu/Eu*more than 1.1 as seen from Tables 1 and 7. Increased concentration of P 2 O 5 -sometimes more than 1.0% -is a characteristic feature of the second group of rocks. Alpine Tectonic-magmatic-metallogenic Peculiarities in West Baluchestan, Middle East: New Data, "Hot" Tectonics, Inclusions, Discussion, Hydrocarbons (HC), and Constraints      Alpine Tectonic-magmatic-metallogenic Peculiarities in West Baluchestan, Middle East: New Data, "Hot" Tectonics, Inclusions, Discussion, Hydrocarbons (HC), and Constraints   We have received fair low isotopic data 87Sr/86Sr (ISr) in two samples of intraplate rocks: trachyandesite R70-2 = 0.7039 ÷ 0.2 (high K/Rb = 393) and trachybasalt R71-4 = 0.70489 ÷ 0.18 (K/Rb = 375, as seen from Table 4). For subduction-related calc-alkaline andesite of Bazman stratovolcano differentiated series (no doubts about this tectonics here), sample R25 was determined a fairly low value ISr = 0.70456 ÷ 0.05, K/Rb principally lower -ca. 250 as seen from Table 1. Isotopic data of these our intraplate rocks differing from collisional and subduction-related rocks from Anatolia, Turkey (Dilek et al, 2010;Khain, 2001;Imamverdiyev, 2008 etc.). Calc-alkaline igneous rocks of the Bazman volcano zone in the regional Sahand -Bazman belt are of differentiated basalt-dacite series. Known stratovolcanoes in this belt are: Bazman with a height 3490m and Taftan 3940m (old mark was 4042m). Old 0.7049 isotopic date for a 'volcanite' of an unnamed volcano in a desert was reported by Camp and Griffis in 1982 (Camp, Griffis, 1982).
Melt inclusions (as well as fluid ones (Tables 2 and 3) -by Dr E. Romanko et al., 2000) were maybe firstly investigated in this area under the leadership of Dr. Prokofiev in the region studied. Some conclusions on this study are: Melt inclusions are not typical for the African super-plume-related intraplate igneous rocks due to tomography by known Ritsema's team (Bull et al., 2009 etc Fig. 2 and 3, as from Table 2) . This fairly deep, non-calc-alkaline rock was also affected by indirect /maybe indirect influence of a huge African super-plume, as proposed. Homogenization occurs under High T = 1150-1220oC (as from composition is in carbonate-rich host rocks, west of known Taftan stratovolcano as in Table 3. Also, high concentration of them are in important alkalinesubalkaline Lar intrusive (Pg3-N1 age) with Cu-Au mineralization. Minimum of fluid inclusions comcentration is in ophiolitic rocks (K or problematic K-Pg1 age) as seen in Tables appendix, down of this paper (Table 3). Intraplate rocks of the second group rocks are deeper by a source versus calc-alkaline ones of the first group. This is supported by the following: 3. Geological, petrographic, and mineralogical data 4. General style of petrology and geochemistry of these rocks similar to intraplate rocks of other regions. Indicative geochemistry including ratios etc, for example, the stable higher K/Rb = 560-586-620 for intraplate rocks vs 245-307-262-230 etc. for subduction-related ones etc. We suppose, at least, a partial compensation of