There are a lot fewer scientific studies of Fe-Mn crusts through the Southern Asia ocean and Indian sea due in part with the better input of terrigenous detritus while the topographic prominence of distributing centres. Hence, it is important to investigate the palaeoceanographic circumstances where Fe-Mn crusts established during these oceanic areas. During latest study cruises, we gotten Fe-Mn crusts through the Pacific and Indian Oceans together with South China Sea. We now have analysed 72 sliced examples from 4 Fe-Mn crusts through the Pacific Ocean, South China water and Southwest Indian Ridge (Fig. 1A) utilizing a fresh particular low-speed diamond wire trimming machine (Model STX-202A, Shenyang Kejing Auto-instrument Co., Ltd.) to obtain test slice thicknesses of under 1.0 mm. With types of this thickness, we can easily conduct paleomagnetic dimensions utilizing a SQUID magnetometer in a conventional paleomagnetic laboratory. In addition to setting up a chronostratigraphic structure, we furthermore determined the constitution and grain-size regarding the magnetized minerals for the hydrogenetic Fe-Mn crusts.
(A) precise location of the sampling internet sites within the Pacific (PO-01), Southern China ocean (SCS-01 and SCS-02) and Southwest Indian Ridge (IO-01).