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Ermittlung der Schwermetallhintergrundbelastung fuer das Stadtgebiet Iserlohn unter Nutzung von Geoinformationssystemen

Die Stadt Iserlohn plant die Erarbeitung eines Bodenschutzkonzeptes. Zwingende Voraussetzung fuer ein solches Konzept ist die Kenntnis der geogenen Schwermetall-Hintergrundbelastung, um Belastungserhoehungen ueberhaupt beurteilen zu koennen. Um die Daten besser verfuegbar zu machen, sollen Geoinformationssysteme genutzt werden, mit deren Hilfe eine Visualisierung moeglich ist. Da mit deren Hilfe auch Interpolationen moeglich sind, waere ein solches System ein wichtiges Werkzeug fuer eine Optimierung der Stadtplanung. Im ersten Schritt wurden nach Vorgaben und mit Leihgeraet des Landesumweltamtes (LUA) anthropogen nicht ueberformte Standorte des gesamten Stadtgebietes beprobt. Die Involvierung des LUA stellt sicher, dass die Messungen landesweit vergleichbar sind, was zwingende Voraussetzung fuer eine ins Auge gefasste spaetere Foerderung des Projektes durch das Landesumweltministerium ist. Die Schwermetallbestimmungen wurden durch Fa UCL in Luenen durch ICP-Messungen durchgefuehrt; die Aus- und Bewertung der Daten erfolgte durch die MFH. An ausgesuchten Punkten wurden zusaetzliche Proben in feinerem Raster genommen, deren Schwermetallgehalte an der MFH durch Inverspolarographie sowie von Fa Lobbe durch AAS bestimmt wurden. An geologisch interessanten Punkten wurden zusaetzliche Vergleichsmessungen per RFA durch die Ruhr-Universitaet Bochum durchgefuehrt. Die Visualisierung der Daten durch das Geoinformationssystem ARCVIEW wird durch das Institut fuer Stadtoekologie und Bodenschutz durchgefuehrt werden.

Whole rock geochemical analyses (major and trace elements, REE) of Neoproterozoic turbiditic greywackes (Lausitz Group), Cadomian anatexitic rocks, and granodiorites (Saxo-Thuringia, Germany)

The data presented are whole rock geochemical analyses (major and minor elements, REE), of Neoproterozoic turbiditic greywackes, Cadomian anatexitic rocks with metabasaltic inclusions, and post-collisional granodiorites. The data publication presents geochemical classification of the source regions of greywacke outcrops across the Lusatian massif, supported by microscopic lithoclast analysis. Discrimination further served to evaluate formerly assumed different geotectonic settings during age-different orogenic processes in the Western, as well as in the Eastern part of Lusatia. This was applied to the turbiditic greywackes, adjacent anatectic to granodioritic rocks, and mafic volcanogenic intercalations within the greywackes (tuffitic material) and the anatexites. Analyses with different methods (ICP, AAS, XRF, OES, WET) were made between 1987 and 1993 in different laboratories of the German Democratic Republic (GDR) and the early GFZ German Research Centre for Geosciences. Economical constraints limited the capacity of and access to labs, and also available techniques in the GDR - limiting the spectrum of elements to be analysed, especially that of REE, as well. Switching from lab to lab (see table) became a necessary tool. Despite these problems, all data proved to be comparable. This also applies to data from later used techniques (ICP, from 1991 on) on some additional sample material, regardless of its higher resolution. In few cases, detection limits have not been been communicated. The data are reported with the EarthChem Templates (https://doi.org/10.26022/IEDA/112263) and as original data tables. The data description is provided in English and German. German title: Gesamtgesteins-Geochemie (Haupt-/Spurenelemente, REE) an neoproterozoischen Grauwacken (Lausitz-Gruppe), Cadomischen Anatexiten und Granodioriten (Saxothuringia, Deutschland)

Crosshole seismic data at ICDP site 5068_1

This seismic crosshole dataset was acquired in the context of the DOVE project (Drilling Overdeep-ened Alpine Valleys) at ICDP site 5068_1 (Tannwald Basin) to image the glacial sediments at sub-meter scale. It consists of the field data with geographical coordinates. The project aims to investigate the landscape evolution in the Alpine region by drilling overdeep-ened valleys and analyzing the cores (DOVE-Phase 1 Scientific Team, Schaller et al., 2023, Schuster et al., 2024). At site 5068_1 (Tannwald Basin), three boreholes were drilled to a depth of about 160 m depth, reaching the bedrock. Boreholes 5068_1_A and 5068_1_B were flush drilling and bore-hole 5068_1_C was cored. In 2022, the boreholes were used to perform high-resolution crosshole seismic measurements in order to image the glacial sediments at sub-meter scale. This dataset con-sists of the seismic field data with geographical coordinates and is subdivided by (1) the used source and receiver borehole equipment (P: sparker and 24-station hydrophone string, SV: vertically polarizing shear wave source and three-component geophone string with eight geophones, SH: horizontally polarizing shear wave source and three-component geophone string with eight geophones), (2) the respective borehole plane (BA, BC, and AC), and (3) the acquisition geometry (STRING, CIRCLE, LINE_BA, LINE_BC, LINE_AC). The surface seismic data (CIRCLE, LINE_BA, LINE_BC, LINE_AC) was recorded by three-component geophones. The seismic data is provided in SEGY Rev. 1.0 format together with geometry files in csv-format.

Operational Dataset about drilling in the Moodies Group of the Barberton Greenstone Belt (BASE – Barberton Archean Surface Environments)

All datasets provided in the operational dataset (Heubeck et al., 2024) of the ICDP project BASE (ICDP 5069) consist of metadata, data and/or images. Here, a summary of explanations of the tables, data and images exported from the database of the project (mDIS BASE) are given and are complemented by additional information on data from measurements done in the laboratory prior to the sampling party. Finally, the sampling data from the first two sampling parties are added. Some basic definitions of identifiers used in ICDP, depths corrections and measurements are also introduced. The BASE (Barberton Archean Surface Environments) scientific drilling project focused on recovering unweathered continuous core through strata of the Paleoarchean Moodies Group (ca. 3.2 Ga), central Barberton Greenstone Belt (BGB), South Africa. They comprise some of the oldest well-preserved sedimentary strata on Earth, deposited within only a few million years in alluvial, fluvial, coastal-deltaic, tidal, and prodeltaic settings; they represent a very-high-resolution record of Paleoarchean surface conditions and processes. Moodies Group strata consist of polymict conglomerates, widespread quartzose, lithic and arkosic sandstones, siltstones, shales, and rare BIFs and jaspilites, interbedded with tuffs and several thin lavas. This report describes operations from preparations to the sampling workshop and complements the related scientific report. Eight inclined boreholes between 280 and 495 m length, drilled during November 2021 through July 2022, obtained a total of 2903 m of curated core of variable quality through steeply to subvertically dipping, in part overturned stratigraphic sections. All drilling objectives were reached. Boreholes encountered a variety of conglomerates, diverse and abundant, mostly tuffaceous sandstones, rhythmically laminated shale-siltstone and banded-iron formations, and several horizons of early-diagenetic sulfate concretions. Oxidative weathering reached far deeper than expected; fracturing was more intense, and BIFs and jaspilites were thicker than anticipated. Two km-long mine adits and a water tunnel, traversing four thick stratigraphic sections within the upper Moodies Group in the central BGB, were also sampled. All boreholes were logged by geophysical instruments. Core was processed (oriented, slabbed, photographed, described, and archived) in a large, publicly accessible hall in downtown Barberton. An exhibition provided background explanations for visitors and related the drilling objectives to the recently established Barberton-Makhonjwa Mountains World Heritage Site. A substantial education, outreach and publicity program addressed the information needs of the local population and of local and regional stakeholders.

Seismic imaging of the overdeepened basin of Lienz (Austria)

In 2016, the Leibniz Institute for Applied Geophysics (Hannover, Germany) carried out two seismic surveys in the Lienz basin. The measurements are part of a DFG-funded project, which investigates the benefit of the application of modern multi-component reflection seismics preparatory to scientific drilling, in particular to the ICDP-project DOVE (Drilling Overdeepened Alpine Valleys). Four P-wave seismic profiles, perpendicular to the valley axes, were recorded using vibroseismic technique to gain structure and facies information. In addition, two SH-wave reflection seismics, one 6-component profile, two small 3-D layouts for P-wave and S-waves, as well as one P-wave and SH-wave refraction seismic profiles were measured for primarily methodological studies. Data show a good quality and, in a first quality control, the bedrock as well as internal structures of the basin are imaged.

On-line Gas Monitoring during Drilling - Data from the ICDP Expedition 5071, DIVE (Drilling the Ivrea-Verbano zonE), boreholes 5071_1_A and 5071_1_B

The drillings of the ICDP-DIVE project located in the Central part of the Ivrea-Verbano Zone at the Linea Cadorna in Migiandone near Ornavasso were accompanied by On-Line Gas Monitoring. During the drilling of both boreholes 5071_1_A (IGSN ICDP5071EH10001) and 5071_1_B (IGSN ICDP5071EH30001) O2, N2, 40Ar, 38Ar, 36Ar, CO2, CH4, H2, He and 222Rn were measured. The dataset contain for each species its concentration over time and depth. Gases were continuously recovered by degassing the drilling mud and quantified using two quadrupole mass spectrometers (QMS): an Omnistar GSD 300 (Pfeiffer Vacuum®, Germany) and a miniRUEDI (Gasometrix®, Switzerland) and an AlphaGUARD radon monitor (Bertin Technologies®, France). Baselines were corrected using the asymmetric least squares smoothing method from Eilers and Boelens (2005) resulting in an uncertainty not exceeding 3% for all the concentrations. All data provided are lag-time (and lag-depth) corrected with an error of less than 1 m.

Borehole and core measurement data for the rock mass characterization of ICDP expedition 5071, DIVE (Drilling the Ivrea-Verbano zonE), borehole 5071_1_B

To structurally and petrophysically characterize the rock mass in the Ivrea-Vebarno Zone, a comprehensive downhole geophysical dataset from has been collected in borehole 5071_1_B (IGSN ICDP5071EH30001) of the ICDP-DIVE project located in the Central part of the Ivrea-Verbano Zone at the Linea Cadorna in Migiandone near Ornavasso. Natural gamma ray (GR), magnetic susceptibility (MS), mud parameter (MP), dual laterolog resistivity (DLL), full waveform sonic (FWS), acoustic televiewer (ATV), optical televiewer (OTV), single point resistance (SPR) logs and vertical seismic profiling data (VSP) are recorded. The borehole data is complemented by magnetic susceptibility measurements conducted on the cored rocks on site during the drilling campaign and by density measurements of 96 core sections using a multi sensor core logger (MSCL) after the drilling campaign at the BGR Core Repository in Berlin-Spandau. Additionally, for 15 whole-round core samples, the bulk density as well as ultrasonic velocities are measured at ambient conditions in the laboratory at Montanuniversität Leoben. Several logging campaigns have been conducted. The logging data contain logs from a logging campaign conducted by GFZ-Operational Support Group (OSG) after the drilling operation in December 2022 and from complementary logging operations carried out by Montanuniversität Leoben and the University of Lausanne in June 2023. The repository data include: processed and/or interpreted properties of the well log data; zero-offset VSP P- and S-wave velocities; and petrophysical properties inferred from the core measurements. The full description of the data and methods is provided in the data description file.

Lokationen der Bohrkerne im Nationalen Bohrkernlager Berlin-Spandau (WMS)

Das Nationale Bohrkernlager der BGR in Berlin-Spandau umfasst Forschungsbohrungen aus verschiedenen Programmen wie z.B. BGR, BMBF, GESEP und ICDP. Auch Überlassungen aus der Erdöl-Industrie sind vertreten. Die Lokationen der Bohrungen sind weltweit angegeben und auf einer Karte visualisiert. Detaillierte Informationen sind verlinkt zu anderen Online-Diensten der BGR.

Available heat flow data from the Guaymas Basin

The data publication contains all heat-flow data of offshore in the Guaymas basin. The data release contains data generated between 1959 and 2019 and constitutes a substantial update and extension compared to the last compilation provided by Becker & Fisher (1991). The data set comprises new heat-flow determinations published after 1991 as well as data from before 1991, which were not included in the Becker & Fisher (1991). The resulting updated database contains 487 determinations of heat-flow at 464 locations from 17 publications. 95% of the reported heat-flow values are determined from marine probe sensing technique and 5% in boreholes.

Open Drilling Information System – OpenDIS

OpenDIS ist eine Bohrkernlagermanagementsoftware der BGR, die es ermöglicht den kompletten Bestand an Bohrkernen im Nationalen Bohrkernlager Berlin-Spandau Online zu recherchieren. Nachgewiesen sind Kerne aus Forschungsbohrungen von langjährigen Bohrprogrammen wie z.B. dem der BGR, dem vom BMBF, von GESEP und des ICDP. Zusätzlich zu den Kernmetadaten und den Informationen zum Bohrprozess sind hochauflösende Fotos, Bohrberichte und weitere Dokumente gelinkt, die heruntergeladen werden können. Außerdem werden auch Beprobungen und deren Analyseergebnisse der Öffentlichkeit zugänglich gemacht, wenn kein temporäres Moratorium auf den Kernen liegt. In diesem Fall kann auf Anfrage aber auch eine Datenfreigabe im Einzelfall gestattet werden.

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