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)

当前最紧迫的目标是以岩屑的形式回收尽可能多的样品，这些样品是在项目背景下产生的（在阿尔茨岛Garching的地热钻井pGT-Bruck-001）。从2018年5月4日起，岩屑将以平均10米/小时的速度输送到地面，最终深度超过3公里。钻井作业全天候进行，无法实时回收的样品最终会堆积在堆中。RAG （Vienna）的地质学家仅在2018年4月18日为我们提供了这个选择。我们需要尽可能密集的采样，这是基于我们在整个3公里钻探剖面上对裂孔表面定年的地质目标，其中应该包括Molasse盆地的整个第三纪充填层、白垩纪地层和上侏罗统（Malm）的岩溶靶层。在样品回收和岩性剖面的初步描述之后，将准备一份基于岩屑微化石（如有孔虫）的生物地层分析的DFG完整建议，这将使molasse盆地该地区的裂孔表面比以前更准确地确定年代。裂孔区标志着侵蚀和非沉积时期，因此可以作为区域尺度上地壳相对垂直运动的代用物。钻屑将长期保存在慕尼黑大学，以便后续项目使用，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.