Sample collection and processing of cuttings from the currently running geothermal deep-drilling well BRUCK-GT-001 (Quaternary to Upper Jurassic, Eastern Melasse Basin, Bavaria)

当前的紧迫目标是尽可能多地回收项目（阿尔兹河加尔兴地热钻探pGT-Bruck-001）中产生的岩屑样品。从2018年5月4日起，钻屑将以平均10米/小时的速度输送到地面，最终深度超过3公里。钻井作业每周7天每天24小时运行，不能在真实的时间内回收的样品最终会堆积在堆中。RAG（维也纳）的地质学家仅在2018年4月18日才向我们提供了此选项。可能需要进行致密取样，这是基于我们在整个3公里钻孔剖面上测定裂孔面年代的地质目标，其中应包括磨拉石盆地的整个第三纪充填。白垩系地层及上侏罗统岩溶化目的层位（马尔默）在样品回收和随后的岩性剖面初步描述之后，DFG提出了基于微体化石的生物地层分析的完整建议（例如，有孔虫）的岩屑将准备，这应该允许裂孔表面在这一领域的 磨拉石盆地的年代比以前更准确。裂孔区标志着侵蚀和非沉积时间段，因此可作为区域尺度上地壳相对垂直运动的替代物。钻屑将在LMU慕尼黑长期存档，以便可用于后续项目，例如 来源分析和其他研究。

The immediate and urgent objective is the recovery of the largest possible amount of sample in the form of cuttings, which are produced in the context of groject (geothermal drilling pGT-Bruck-001 at Garching on the Alz). From May 4, 2018, cuttings will be delivered to the surface at a rate of 10 m / hour on average to a final depth of over 3 km. The drilling operation runs 24/7 and samples that can not be recovered in real time end up in the heap. Geologists of RAG (Vienna) offered us this option only on April 18th 2018.The need for densest sampling possible is based on our geological targets for dating hiatal surfaces over the entire 3-kilometer drill profile, which should include the entire Tertiary fill of the Molasse Basin, Cretaceous strata and the karstified target horizon of the Upper Jurassic (Malm).Subsequent to the sample recovery and subsequent initial description of the lithological profile, a DFG full proposal for biostratigraphic analysis based on microfossils (e.g., foraminifera) of the cuttings will be prepared, which should allow the hiatal surfaces in this area of ​​the molasse basin to be dated more accurately than before. The hiatal areas mark erosion and non-sedimentation time periods and therefore serve as proxies for relative vertical movements of the earth's crust on regional scales.The drillcuttings are to be long-term archived at the LMU Munich in order to be available for follow-up projects, e.g. in ​​provenance analysis and other studies.