cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/gfz.sddb.1402
title: Thermal Conductivity of Cuttings of the KTB Main Hole HB1d (transformed data)

description: In the KTB field laboratory, thermal conductivity was measured on cuttings material in depth intervals of 10 m and on available drill core material. The results on drill cores give anisotropy information. In general, the maximum thermal conductivity is measured parallel to the strike of foliation and the minimum thermal conductivity perpendicular to that direction. Approximately 250 g of cuttings of the fraction &lt; 2 mm grain are mixed with water. This mixture of cuttings and water is measured (for more details see Pribnow et al. 1992 or Pribnow 1994). This measurement yields the geometric mean of the thermal conductivities in a two-phase mixture model.
By measuring the weights of the dry cuttings and the mixture of cuttings and water, PHI is determined knowing the density of the cuttings and water (PHI = 32 %). Usually, the arithmetic mean value from 7 repeating measurements is used.
DOI: 10.1594/gfz.sddb.1159
title: Raw pollen data from kasten core CON01-603-5 part1 (%)

description: Sediment slices of 0.5 cm thickness were obtained from gravity core segments and of 1 cm thickness from the Vydrino piston core. Volumetric subsamples of 5 cm3 (10 cm3 in case of the lowermost samples from Continent core) were prepared according to standard procedures, including 7-μm ultrasonic fine-sieving (Cwynar et al., 1979, Fægri et al., 1989 K. Fægri, P.E. Kaland and K. Krzywinski, Textbook of Pollen Analysis (4th edition), John Wiley & Sons, Chichester (1989) 328 pp..Fægri et al., 1989 and PALE Steering Committee, 1994). Two tablets of Lycopodium marker spores were added to each sample for calculating total pollen and spore concentrations (Stockmarr, 1971). Water-free glycerol was used for storage and preparation of microscopic slides. The palynological samples were counted at magnifications of 400–600×, applying 1000× for the identification of difficult pollen types, e.g., including Saxifragaceae, Crassulaceae, and Rosaceae.
DOI: 10.1594/gfz.sddb.1379
title: Radial Vp on Core Samples of the KTB Pilot Hole VB1a

description: Ultrasonic wave propagation through core samples is studied in a water tank to insure good signal transmission between transducer, rock specimen and receiver and to avoid time - consuming mechanical preparations. A specifically designed instrumentation was used, which allows to measure the radial p-wave velocity in the plane normal to the core axis and, if the core sample is long enough, also the axial p- and s-wave velocities by common mid-point (CMP) refraction experiments, with water as the upper and the core as the lower layer. By rotating the cores, all measurements are performed for variable azimuths. Computer control of all mechanical and electronical operations, digital 10-bit data aquisition, signal stacking and interactive seismogram evaluation are essential features of the system.
Data are available from the few cores taken below 4000 m. The investigations were carried out on the longest core sample of each cored interval (16 specimens).
DOI: 10.1594/gfz.sddb.1154
title: Wet bulk density of piston core CON01-605-3 at Vydrino

description: Wet bulk density of piston core CON01-605-3 at Vydrino
DOI: 10.1594/gfz.sddb.1425
title: Gas chromatography of gas samples of the KTB main hole HB1d

description: The main objective of this drilling fluid analysis was the detection of inflows of formation fluids. Therefore different gases dissolved in the drilling mud were measured continuously and automatically at drill site with three different methodes (Fig.: KTB-Report 92-2 page C13). The operation principles of the mass spectrometer and the gaschromatograph have been explained by STROH et al. (1988) and FIGGEMEIER et al. (1991). The principle of radon determination is published by ERZINGER et al. (1992).
DOI: 10.1594/gfz.sddb.1393
title: Ultrasonic Seismics on Mini Cores (Plugs) of the KTB Main Hole HB1g

description: Ultrasonic wave propagation through core samples is studied in a water tank to insure good signal transmission between transducer, rock specimen and receiver and to avoid time - consuming mechanical preparations.
A specifically designed instrumentation was used, which allows to measure the radial p-wave velocity in the plane normal to the core axis and, if the core sample is long enough, also the axial p- and s-wave velocities by common mid-point (CMP) refraction experiments, with water as the upper and the core as the lower layer. By rotating the cores, all measurements are performed for variable azimuths. Computer control of all mechanical and electronical operations, digital 10-bit data aquisition, signal stacking and interactive seismogram evaluation are essential features of the system.
Data are available from the few cores taken below 4000 m. The investigations were carried out on the longest core sample of each cored interval (16 specimens).
DOI: 10.1594/gfz.sddb.1333
title: Natural Gamma-ray Activity of Cuttings of the KTB Main Hole HB1i (measurements with Germanium detector only)

description: In the laboratory, the gamma radiation is measured by a sodium iodtite (NaI) scintillation detector (cores and cuttings) and by a germanium (Ge) semiconductor detector (cuttings).The cuttings are measured in air tight Marinelli-beakers with a volume of 250 cm3. For the core measurements a special, automatically operating equipment with three NaI detectors is used. A description of this apparatus is given in Wienand et al. (1989). The principle of measurements with the Ge-detector is described by Bücker et al. (1991). The measured spectra are calibrated by a standard of Luvarovite (NIM-L, South African Bureau of Standards). The influence of the local terrestrial radiation on the measurements has been corrected. Especially for the core measurements a calibration procedure has been performed for geometric corrections (core diameter and length). In general, a measuring time of 12 h for the NaI-detector and 2 h for the Ge-detector was chosen.
DOI: 10.1594/gfz.sddb.1392
title: Ultrasonic Seismics on Mini Cores (Plugs) of the KTB Main Hole HB1a

description: Ultrasonic wave propagation through core samples is studied in a water tank to insure good signal transmission between transducer, rock specimen and receiver and to avoid time - consuming mechanical preparations.
A specifically designed instrumentation was used, which allows to measure the radial p-wave velocity in the plane normal to the core axis and, if the core sample is long enough, also the axial p- and s-wave velocities by common mid-point (CMP) refraction experiments, with water as the upper and the core as the lower layer. By rotating the cores, all measurements are performed for variable azimuths. Computer control of all mechanical and electronical operations, digital 10-bit data aquisition, signal stacking and interactive seismogram evaluation are essential features of the system.
Data are available from the few cores taken below 4000 m. The investigations were carried out on the longest core sample of each cored interval (16 specimens).
DOI: 10.1594/gfz.sddb.1242
title: Geochemical Analysis of Cations of Mud Samples of the KTB Main Hole HB1.

description: Geochemical Analysis of Cations of Mud Samples of the KTB Main Hole HB1.
DOI: 10.1594/gfz.sddb.1361
title: Porosity of Mini Cores (Plugs) of the KTB Main Hole HB1g

description: The porosity was determined using the most common Archimedian method (Schopper, 1982). It is based on the following three weight determinations of the sample:
 (1) The samples were dried for approximately 100 hours at 80 °C in an oven until the sample weight remains constant. The pore space is filled with air.
 (2) The samples were saturated, i.e. the pore space was completely filled with destilled water. Therefore, at room temperature and under vacuum the samples were submerged in destilled water for at least 24 hours. Afterwards atmospheric pressure was applied for at least 24 hours to let the water invade into the sample. The sample was taken from the water and the fluid film on the sample surface was removed.
 (3) At least, the saturated samples were submerged again in destilled water and the third measurement was done. An apparent mass due to buoyancy was determined.
DOI: 10.1594/gfz.sddb.1376
title: Magnetic Susceptibility of Cores of the KTB Main Hole HB1a

description: The magnetic susceptibility is measured by an inductive AC device (BARTINGTON). The sample is placed inside a coil which generates an alternating magnetic field. The applied frequency is 460 Hz (cuttings, 25.4 mm mini cores), 565 Hz (cores) or 1470 Hz (15 mm mini cores) respectively. A shift in the oscillator frequency is a measure for the magnetic susceptibility of the sample. The applied magnetic field strength is 80 A/m (RMS) and appr. 2 times the total earth magnetic field strength in the KTB area (=38 A/m). The measurement field is lower than the field which is necessary for magnetic saturation and allows therefore to measure the initial susceptibility. The used sensors are insensitive to the electrical conductivity of the samples. Except the determination of the temperature dependent susceptibility, all measurements are done under surface conditions (room temperature and atmospheric pressure).
DOI: 10.1594/gfz.sddb.1354
title: Permeability of Mini Cores of the KTB Main Hole HB1d

description: In the KTB field laboratory, porosity, internal surface and permeability were determined on identical mini cores with 25.4 mm in diameter and approximately 50 mm in length. These samples were drilled either axial or radial with respect to the drill core, or parallel or perpendicular with respect to the foliation. In the KTB field laboratory, the stationary sArcy method was used with nitrogen gas as the streaming medium. The measurements were made at a constant confining pressure of 5 MPa to 6.5 MPa. The nitrogen pressure gradient was up to 2 MPa at the inflow side minus atmospheric pressure at the outflow side of the sample. Because of the low pore pressures during the measurements (max 2 MPa) the data had to be corrected for the effect of gas friction along the matrix wall, the so called Klinkenberg effect (Huenges et al. 1990). Further details, regarding equipment and evaluation are given by Pusch et al. (1986).
DOI: 10.1594/gfz.sddb.1399
title: Thermal Conductivity of Cuttings of the KTB Main Hole HB1i (measured data)

description: In the KTB field laboratory, thermal conductivity was measured on cuttings material in depth intervals of 10 m and on available drill core material. The results on drill cores give anisotropy information. In general, the maximum thermal conductivity is measured parallel to the strike of foliation and the minimum thermal conductivity perpendicular to that direction. Approximately 250 g of cuttings of the fraction &lt; 2 mm grain are mixed with water. This mixture of cuttings and water is measured (for more details see Pribnow et al. 1992 or Pribnow 1994). This measurement yields the geometric mean of the thermal conductivities in a two-phase mixture model.
By measuring the weights of the dry cuttings and the mixture of cuttings and water, PHI is determined knowing the density of the cuttings and water (PHI = 32 %). Usually, the arithmetic mean value from 7 repeating measurements is used.
DOI: 10.1594/gfz.sddb.1148
title: Dry bulk density and water content of piston core CON01-605-3 from Vydrino

description: Dry bulk density and water content of piston core CON01-605-3 from Vydrino
DOI: 10.1594/gfz.sddb.1228
title: XRF of Cores of the KTB Main Hole HB1a.

description: Cuttings were crushed in a tungsten carbide ball mill for 25 min; while core samples were crushed in a tungsten carbide jaw breaker and then processed in the same way as the chip material. The resulting powder samples (max 0.06 mm size) were dried at 105°C, 3 gr selected and mixed with 2.5% Moviol solution and finally pressed under 40 kN into alumina rings. These standardized pellets were used for both, XRD and XRF measurements.For the determination of major and trace elements a fully automated wavelenght-dispersive XRF device (SIEMENS SRS 303 AS) was used in the field laboratory. The standard measuring operation comprised 11 major elements (SiO2, TiO2, Al2O3, Fe2O3 total, MnO, MgO, CaO, Na2O, K2O, P2O5, S) and 12 traces (Rb, Sr, Y, Zr, Nb, Cr, Ni, Zn, V, Cu, Th, U). Element concentrations were calculated by setting up calibration curves computed with more than 40 international natural rock standards.
DOI: 10.1594/gfz.sddb.1243
title: Geochemical Analysis of Cations of Mud Samples of the KTB Main Hole HB1a.

description: Geochemical Analysis of Cations of Mud Samples of the KTB Main Hole HB1a.
DOI: 10.1594/gfz.sddb.1373
title: Magnetic Susceptibility of Cores of the KTB Pilot Hole VB1

description: The magnetic susceptibility is measured by an inductive AC device (BARTINGTON). The sample is placed inside a coil which generates an alternating magnetic field. The applied frequency is 460 Hz (cuttings, 25.4 mm mini cores), 565 Hz (cores) or 1470 Hz (15 mm mini cores) respectively. A shift in the oscillator frequency is a measure for the magnetic susceptibility of the sample. The applied magnetic field strength is 80 A/m (RMS) and appr. 2 times the total earth magnetic field strength in the KTB area (=38 A/m). The measurement field is lower than the field which is necessary for magnetic saturation and allows therefore to measure the initial susceptibility. The used sensors are insensitive to the electrical conductivity of the samples. Except the determination of the temperature dependent susceptibility, all measurements are done under surface conditions (room temperature and atmospheric pressure).
DOI: 10.1594/gfz.sddb.1289
title: Density of Core Samples of the KTB Pilot Hole VB1

description: The density of rocks depends on the mineral contents and is therefore a helpful property for the discrimination of lithological units. It is also used for the calculation of several other properties, like the heat production rate from potassium, uranium and thorium contents, volume susceptibility, thermal conductivity, etc. The density of cuttings and cores is determined by the Archimedian method. The weight of the sample is determined in air and in water. Knowing the density of water, the volume and the density of the sample is calculated.
Air adsorbed by the large surface of the cuttings causes errors in the calculated volume. Therefore, the specific surface of the cuttings is minimized by using only cuttings greater than 2 mm in diameter. The depth interval of the measurements is generally 2 m.
DOI: 10.1594/gfz.sddb.1149
title: Wet bulk density (GRAPE) of trigger core CON01-605-4a to piston core CON01-605-4a at Vydrino

description: Wet bulk density (GRAPE) of trigger core CON01-605-4a to piston core CON01-605-4a at Vydrino
DOI: 10.1594/gfz.sddb.1348
title: Permeability of Mini Cores of the KTB Pilot Hole VB1a

description: In the KTB field laboratory, porosity, internal surface and permeability were determined on identical mini cores with 25.4 mm in diameter and approximately 50 mm in length. These samples were drilled either axial or radial with respect to the drill core, or parallel or perpendicular with respect to the foliation.In the KTB field laboratory, the stationary sArcy method was used with nitrogen gas as the streaming medium. The measurements were made at a constant confining pressure of 5 MPa to 6.5 MPa. The nitrogen pressure gradient was up to 2 MPa at the inflow side minus atmospheric pressure at the outflow side of the sample. Because of the low pore pressures during the measurements (max 2 MPa) the data had to be corrected for the effect of gas friction along the matrix wall, the so called Klinkenberg effect (Huenges et al. 1990). Further details, regarding equipment and evaluation are given by Pusch et al. (1986).
DOI: 10.1594/gfz.sddb.1312
title: Electrical Resistivity of Mini Cores (Plugs) of the KTB Main Hole HB1a

description: In general, four-electrode devices are used to measure the resistivity on original (unprepared) cores and on mini cores drilled from these original cores. The in-phase and the out-of-phase signal is measured and therefore the complex resistivity is determined. All measurements are performed under surface conditions (room temperature and atmospheric pressure). Mini cores of 25.4 mm diameter and approximately 50 mm length are drilled from original cores. Anisotropy information is obtained by different core orientations. The complex resitivity is measured in an 4-electrode elctrolytic cell by use of a lock-in-amplifier. The applied frequency ranges from 0.5 Hz to 120 kHz.
The samples are first evacuated and back-saturated with destilled water. In this case, mainly sigmas and sigmam contribute to the rock resistivity. A second cycle of evacuating and back-saturating with 0.1 molar NaCl solution leads to sigmav (Rauen 1994).
DOI: 10.1594/gfz.sddb.1407
title: Thermal Conductivity of Cores of the KTB Pilot Hole VB1a (measured data)

description: The thermal conductivity on cores is measured in two steps (see Pribnow 1994). First, one face end of the core is sawed and polished. The half space line source is pressed against this preparated face (without further contact medium like water) by a computerized device. The position of the heat source is varied in 15 degree intervals around one semicircle. At each position, 3 repeating measurements are performed. The line source azimuth of the lowest measured thermal conductivity is the strike of the foliation plane. On the other hand, the thermal conductivity is maximal parallel to that direction. This apparent paradox can be explained by the experimental method, because the measurement plane is perpendicular to the orientation of the line source (Pribnow 1994).In a second step a calotte plane perpendicular to the strike of foliation is prepared. A second series of thermal conductivity measurements in 15 degree intervals ...
DOI: 10.1594/gfz.sddb.1259
title: Gas Radon Measurements of Gas Samples of the KTB Main Hole HB1d

description: In the complete KTB-VB and in in the KTB-HB down to a depth of 3003 m the gas phase was released and collected by twirl degassers attached in front of the mud shakers. This open system led to gas losses as well as air contamination. Therefore results obtained down to this depth have only qualitative character. After casing the KTB-HB to a depth of 3003 m a bypass system was installed at the BOP (blow-out preventer) 50 cm below the flow line. A constant part (about 100 l/min) of gas-bearing drill mud is pumped through the bypass directly to a twirl degasser which is isolated against atmosphere. To prevent air contamination or sucking off drill mud the pressure in the gas trap is balanced by charging argon. The released gas phase is completely sucked off and led through a heated hose (in order to prevent water condensation or freezing) to the logging unit and there parallel to the measuring systems gaschromatograph, mass spectrometer and radon logging device.
DOI: 10.15468/dl.qg62pg
title: Occurrence Download

description: A dataset containing 172 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((119.3714 29.6135,120.78801 29.6135,120.78801 30.85205,119.3714 30.85205,119.3714 29.6135))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Microhylidae"
 ]
}

 The dataset includes 172 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0051162-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/gfz.sddb.1390
title: Axial Vs on Core Samples of the KTB Main Hole HB1a

description: Ultrasonic wave propagation through core samples is studied in a water tank to insure good signal transmission between transducer, rock specimen and receiver and to avoid time - consuming mechanical preparations.
A specifically designed instrumentation was used, which allows to measure the radial p-wave velocity in the plane normal to the core axis and, if the core sample is long enough, also the axial p- and s-wave velocities by common mid-point (CMP) refraction experiments, with water as the upper and the core as the lower layer. By rotating the cores, all measurements are performed for variable azimuths. Computer control of all mechanical and electronical operations, digital 10-bit data aquisition, signal stacking and interactive seismogram evaluation are essential features of the system.
Data are available from the few cores taken below 4000 m. The investigations were carried out on the longest core sample of each cored interval (16 specimens).
DOI: 10.1594/gfz.sddb.1336
title: Natural Gamma-ray Activity of Cuttings of the KTB Main Hole HB1g  (measurements with NaI-detector only)

description: In the laboratory, the gamma radiation is measured by a sodium iodtite (NaI) scintillation detector (cores and cuttings) and by a germanium (Ge) semiconductor detector (cuttings).
The cuttings are measured in air tight Marinelli-beakers with a volume of 250 cm3. For the core measurements a special, automatically operating equipment with three NaI detectors is used. A description of this apparatus is given in Wienand et al. (1989). The principle of measurements with the Ge-detector is described by Bücker et al. (1991).The measured spectra are calibrated by a standard of Luvarovite (NIM-L, South African Bureau of Standards). The influence of the local terrestrial radiation on the measurements has been corrected. Especially for the core measurements a calibration procedure has been performed for geometric corrections (core diameter and length). In general, a measuring time of 12 h for the NaI-detector and 2 h for the Ge-detector was chosen.
DOI: 10.1594/gfz.sddb.1396
title: Thermal Conductivity of Cuttings of the KTB Main Hole HB1d (measured data)

description: In the KTB field laboratory, thermal conductivity was measured on cuttings material in depth intervals of 10 m and on available drill core material. The results on drill cores give anisotropy information. In general, the maximum thermal conductivity is measured parallel to the strike of foliation and the minimum thermal conductivity perpendicular to that direction. Approximately 250 g of cuttings of the fraction &lt; 2 mm grain are mixed with water. This mixture of cuttings and water is measured (for more details see Pribnow et al. 1992 or Pribnow 1994). This measurement yields the geometric mean of the thermal conductivities in a two-phase mixture model.
By measuring the weights of the dry cuttings and the mixture of cuttings and water, PHI is determined knowing the density of the cuttings and water (PHI = 32 %). Usually, the arithmetic mean value from 7 repeating measurements is used.
DOI: 10.1594/gfz.sddb.1400
title: Thermal Conductivity of Cuttings of the KTB Main Hole HB1 (transformed data)

description: In the KTB field laboratory, thermal conductivity was measured on cuttings material in depth intervals of 10 m and on available drill core material. The results on drill cores give anisotropy information. In general, the maximum thermal conductivity is measured parallel to the strike of foliation and the minimum thermal conductivity perpendicular to that direction. Approximately 250 g of cuttings of the fraction &lt; 2 mm grain are mixed with water. This mixture of cuttings and water is measured (for more details see Pribnow et al. 1992 or Pribnow 1994). This measurement yields the geometric mean of the thermal conductivities in a two-phase mixture model.
By measuring the weights of the dry cuttings and the mixture of cuttings and water, PHI is determined knowing the density of the cuttings and water (PHI = 32 %). Usually, the arithmetic mean value from 7 repeating measurements is used.