1-if ophiolitic section obducted from east over continent in the west. The sequence of ophiolite should be started from the base (peridotites) in the east to the crust part basalt and sediment in the west , or no rules for that and fracture or morphology control for that.
2-it is possible to know the direction of ocean closure , from types of magmas and peridotites. For example tholeiitic or MORB indicates tensional force where boninite indicates compression setting (last closure stage of ocean) . Is that true or no rules for that too
1. There is no simple answer here. First of all it depends on the origin of the ophiolitic sequence (mid-ocean ridge, subduction zone, supra-ophiolitic zones etc) the orogenetic processes of the emplacement as well as the subsequent tectonics. Some typical ophiolitic sequences (eg Troodos ophiolites in Cyprus) have sustained 90 deg rotations. In Greece depending on the hypotheses about the origin of the ophiolites they might have sustained an almost 180 deg overthrow.
2. Not sure about that but the geochemistry of magmas surely depends on the formation environment (ie volcanic arc, subduction zone, ocean rift etc)
It all depends upon the tectonic evolution of the region. Taking the example of the Tethyan ophiolites on the Himalayas where the Indian plate collided with the Eurasian plate from the south to north direction, we have the ultramafic sequence in the southern part whereas the mafic and the deep-sea sediment in the northern part. It is preserved so well to study all its tectonic history but at times it becomes difficult to interpret where the whole sequence is disturbed by the tectonic forces.
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