Lehrmann, Daniel; Stepchinski, Leanne; Altiner, Demir; Orchard, Michael J; Montgomery, Paul; Enos, Paul; Ellwood, Brooks B; Bowring, Samuel A; Ramezani, Jahandar; Wang, Hongmei; Wei, Jiayong; Yu, Meiyi; Griffiths, James D; Minzoni, Marcello; Schaal, Ellen K; Li, Xiaowei; Meyer, Katja M; Payne, Jonathan L (2015): An integrated biostratigraphy (conodonts and foraminifers) and chronostratigraphy (paleomagnetic reversals, magnetic susceptibility, elemental chemistry, carbon isotopes and geochronology) for the Permian-Triassic strata of Guandao section [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.836206, Supplement to: Lehrmann, D et al. (2015): An integrated biostratigraphy (conodonts and foraminifers) and chronostratigraphy (paleomagnetic reversals, magnetic susceptibility, elemental chemistry, carbon isotopes and geochronology) for the Permian–Upper Triassic strata of Guandao section, Nanpanjiang Basin, south China. Journal of Asian Earth Sciences, 108, 117-135, https://doi.org/10.1016/j.jseaes.2015.04.030
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Abstract:
The chronostratigraphy of Guandao section has served as the foundation for numerous studies of the end-Permian extinction and biotic recovery in south China. Guandao section is continuous from the Permian-Triassic boundary to the Upper Triassic.
Conodonts enable broad delineation of stage and substage boundaries and calibration of foraminifer biostratigraphy as follows. Changhsingian-Griesbachian: first Hindeodus parvus, and first appearance of foraminifers Postcladella kalhori and Earlandia sp. Griesbachian-Dienerian: first Neospathodus dieneri, and last appearance of foraminifer P. grandis. Dienerian-Smithian: first Novispathodus waageni and late Dienerian first appearance of foraminifer Hoyenella ex gr. sinensis. Smithian-Spathian: first Nv? crassatus and last appearance of foraminifers Arenovidalina n. sp. and Glomospirella cf. vulgaris. Spathian-Aegean: first Chiosella timorensis and first appearance of foraminifer Meandrospira dinarica. Aegean-Bithynian: first Nicoraella germanica and first appearance of foraminifer Pilammina densa. Bithynian-Pelsonian: after last Neogondolella regalis, prior to first Paragondolella bulgarica and first appearance of foraminifer Aulotortus eotriasicus. Pelsonian-Illyrian: first Pg. excelsa and last appearance of foraminifers Meandrospira? deformata and Pilamminella grandis. Illyrian-Fassanian: first Budurovignathus truempyi, and first appearance of foraminifers Abriolina mediterranea and Paleolituonella meridionalis. Fassanian-Longobardian: first Bv. mungoensis and last appearance of foraminifer A. mediterranea. Longobardian-Cordevolian: first Quadralella polygnathiformis and last appearance of foraminifers Turriglomina mesotriasica and Endotriadella wirzi.
The section contains primary magnetic signature with frequent reversals occurring around the Permian-Triassic, Olenekian-Anisian, and Anisian-Ladinian boundaries. Predominantly normal polarity occurs in the lower Smithian, Bithynian, and Longobardian-Cordevolian. Predominantly reversed polarity occurs in the upper Griesbachian, Induan-Olenekian, Pelsonian and lower Illyrian. Reversals match well with the GPTS. Large amplitude carbon isotope excursions, attaining values as low as -2.9 per mil d13C and high as +5.7 per mil d13C, characterize the Lower Triassic and basal Anisian. Values stabilize around +2 per mil d13C through the Anisian to Carnian. Similar signatures have been reported globally. Magnetic susceptibility and synthetic gamma ray logs show large fluctuations in the Lower Triassic and an overall decline in magnitude of fluctuation through the Middle and Upper Triassic. The largest spikes in magnetic susceptibility and gamma ray, indicating greater terrestrial lithogenic flux, correspond to positive d13C excursions. High precision U-Pb analysis of zircons from volcanic ash beds provide a robust age of 247.28 ± 0.12 Ma for the Olenekian-Anisian boundary at Guandao and an age of 251.985 ± 0.097 Ma for the Permian-Triassic boundary at Taiping. Together, the new U-Pb geochronology from the Guandao and Taiping sections suggest an estimated duration of 4.71 ± 0.15 Ma for the Early Triassic Epoch.
Further details:
Coverage:
Median Latitude: 25.607315 * Median Longitude: 106.633722 * South-bound Latitude: 25.604435 * West-bound Longitude: 106.628356 * North-bound Latitude: 25.610194 * East-bound Longitude: 106.639087
Date/Time Start: 2000-01-16T00:00:00 * Date/Time End: 2007-09-01T00:00:00
Minimum SECTION, height: 0.00 m * Maximum SECTION, height: 623.30 m
Event(s):
Guandao_Section * Latitude Start: 25.604435 * Longitude Start: 106.628356 * Latitude End: 25.610194 * Longitude End: 106.639087 * Date/Time Start: 2000-01-16T00:00:00 * Date/Time End: 2007-09-01T00:00:00 * Location: Bianyang, Guizhou, China * Method/Device: Sampling by hand (HAND) * Comment: measurement by tape measure
Comment:
Species abundance: 1= present; 0= absent
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | SECTION, height | Section | m | Lehrmann, Daniel | Geocode | |
| 2 | Clarkina changxingensis | C. changxingensis | Lehrmann, Daniel | Light microscope | ||
| 3 | Hindeodus parvus | H. parvus | Lehrmann, Daniel | Light microscope | ||
| 4 | Hindeodus typicalis | H. typicalis | Lehrmann, Daniel | Light microscope | ||
| 5 | Hindeodus anterodentatus | H. anterodentatus | Lehrmann, Daniel | Light microscope | ||
| 6 | Neospathodus dieneri | N. dieneri | Lehrmann, Daniel | Light microscope | ||
| 7 | Neospathodus peculiaris | N. peculiaris | Lehrmann, Daniel | Light microscope | ||
| 8 | Neospathodus cristagalli | N. cristagalli | Lehrmann, Daniel | Light microscope | ||
| 9 | Neospathodus pakistanensis | N. pakistanensis | Lehrmann, Daniel | Light microscope | ||
| 10 | Conservatella conservativa | C. conservativa | Lehrmann, Daniel | Light microscope | ||
| 11 | Discretella discreta | D. discreta | Lehrmann, Daniel | Light microscope | ||
| 12 | Novispathodus waageni | N. waageni | Lehrmann, Daniel | Light microscope | ||
| 13 | Guangxidella bransoni | G. bransoni | Lehrmann, Daniel | Light microscope | ||
| 14 | Neospathodus crassatus | N. crassatus | Lehrmann, Daniel | Light microscope | ||
| 15 | Novispathodus abruptus | N. abruptus | Lehrmann, Daniel | Light microscope | ||
| 16 | Spathicuspus spathi | S. spathi | Lehrmann, Daniel | Light microscope | ||
| 17 | Triassospathodus homeri | T. homeri | Lehrmann, Daniel | Light microscope | ||
| 18 | Triassospathodus symmetricus | T. symmetricus | Lehrmann, Daniel | Light microscope | ||
| 19 | Neospathodus triangularis | N. triangularis | Lehrmann, Daniel | Light microscope | ||
| 20 | Triassospathodus brochus | T. brochus | Lehrmann, Daniel | Light microscope | ||
| 21 | Chiosella timorensis | C. timorensis | Lehrmann, Daniel | Light microscope | ||
| 22 | Chiosella gondolelloides | C. gondolelloides | Lehrmann, Daniel | Light microscope | ||
| 23 | Neogondolellaregalis | Neogondolellaregalis | Lehrmann, Daniel | Light microscope | ||
| 24 | Gladigondolella carinata | G. carinata | Lehrmann, Daniel | Light microscope | ||
| 25 | Gladigondolella tethydis | G. tethydis | Lehrmann, Daniel | Light microscope | ||
| 26 | Nicoraella germanica | N. germanica | Lehrmann, Daniel | Light microscope | ||
| 27 | Nicoraella kockeli | N. kockeli | Lehrmann, Daniel | Light microscope | ||
| 28 | Nicoraella sp. | Nicoraella sp. | Lehrmann, Daniel | Light microscope | ||
| 29 | Eurygnathodus sp. | Eurygnathodus sp. | Lehrmann, Daniel | Light microscope | ||
| 30 | Cornudina sp. | Cornudina sp. | Lehrmann, Daniel | Light microscope | ||
| 31 | Neostrachanognathus spp. | Neostrachanognathus spp. | Lehrmann, Daniel | Light microscope | ||
| 32 | Cratognathus spp | Cratognathus spp | Lehrmann, Daniel | Light microscope | ||
| 33 | Paragondolella bulgarica | P. bulgarica | Lehrmann, Daniel | Light microscope | ||
| 34 | Paragondolella bifurcata | P. bifurcata | Lehrmann, Daniel | Light microscope | ||
| 35 | Paragondolella excelsa | P. excelsa | Lehrmann, Daniel | Light microscope | ||
| 36 | Paragondolella fuelopi | P. fuelopi | Lehrmann, Daniel | Light microscope | ||
| 37 | Paragondolella alpina | P. alpina | Lehrmann, Daniel | Light microscope | ||
| 38 | Paragondolella foliata | P. foliata | Lehrmann, Daniel | Light microscope | ||
| 39 | Paragondolella inclinata | P. inclinata | Lehrmann, Daniel | Light microscope | ||
| 40 | Neogondolella transita | N. transita | Lehrmann, Daniel | Light microscope | ||
| 41 | Neogondolella bifurcata | N. bifurcata | Lehrmann, Daniel | Light microscope | ||
| 42 | Neogondolella constricta | N. constricta | Lehrmann, Daniel | Light microscope | ||
| 43 | Neogondolella trammeri | N. trammeri | Lehrmann, Daniel | Light microscope | ||
| 44 | Budurovignathus truempyi | B. truempyi | Lehrmann, Daniel | Light microscope | ||
| 45 | Budurovignathus hungaricus | B. hungaricus | Lehrmann, Daniel | Light microscope | ||
| 46 | Budurovignathus mungoensis | B. mungoensis | Lehrmann, Daniel | Light microscope | ||
| 47 | Mosherella newpassensis | M. newpassensis | Lehrmann, Daniel | Light microscope | ||
| 48 | Quadralella polygnathiformis | Q. polygnathiformis | Lehrmann, Daniel | Light microscope | ||
| 49 | Quadralella tadpole | Q. tadpole | Lehrmann, Daniel | Light microscope | ||
| 50 | Hoyenella ex gr. sinensis | H. ex gr. sinensis | Lehrmann, Daniel | Light microscope | ||
| 51 | Paleolituonella reclinata | P. reclinata | Lehrmann, Daniel | Light microscope | ||
| 52 | Paleolituonella meridionalis | P. meridionalis | Lehrmann, Daniel | Light microscope | ||
| 53 | Agathammina sp. | Agathammina sp. | Lehrmann, Daniel | Light microscope | genus questionable | |
| 54 | Endotebanella kocaeliensis | E. kocaeliensis | Lehrmann, Daniel | Light microscope | ||
| 55 | Endotebanella sp. | Endotebanella sp. | Lehrmann, Daniel | Light microscope | n. sp. | |
| 56 | Endotriadella wirzi | E. wirzi | Lehrmann, Daniel | Light microscope | ||
| 57 | Endotriada thyrrhenica | E. thyrrhenica | Lehrmann, Daniel | Light microscope | ||
| 58 | Meandrospira pusilla | M. pusilla | Lehrmann, Daniel | Light microscope | ||
| 59 | Meandrospira dinarica | M. dinarica | Lehrmann, Daniel | Light microscope | ||
| 60 | Meandrospira cheni | M. cheni | Lehrmann, Daniel | Light microscope | ||
| 61 | Meandrospirillina irregularis | M. irregularis | Lehrmann, Daniel | Light microscope | questionable | |
| 62 | Meandrospira deformata | M. deformata | Lehrmann, Daniel | Light microscope | genus questionable | |
| 63 | Meandrospira sp. | Meandrospira sp. | Lehrmann, Daniel | Light microscope | n. sp. | |
| 64 | Pilamminella grandi | P. grandi | Lehrmann, Daniel | Light microscope | ||
| 65 | Pilammina densa | P. densa | Lehrmann, Daniel | Light microscope | ||
| 66 | Ophthalmidium spp. | Ophthalmidium spp. | Lehrmann, Daniel | Light microscope | ||
| 67 | Ophthalmidium exiguum | O. exiguum | Lehrmann, Daniel | Light microscope | ||
| 68 | Endoteba controversa | E. controversa | Lehrmann, Daniel | Light microscope | ||
| 69 | Endoteba bithynica | E. bithynica | Lehrmann, Daniel | Light microscope | ||
| 70 | Endoteba obturata | E. obturata | Lehrmann, Daniel | Light microscope | ||
| 71 | Planiinvoluta mesotriasica | P. mesotriasica | Lehrmann, Daniel | Light microscope | genus questionable | |
| 72 | Turrispirillina sp. | Turrispirillina sp. | Lehrmann, Daniel | Light microscope | ||
| 73 | Triadodiscus sp. | Triadodiscus sp. | Lehrmann, Daniel | Light microscope | ||
| 74 | Aulotortus eotriasicus | A. eotriasicus | Lehrmann, Daniel | Light microscope | ||
| 75 | Glomospirella cf. vulgaris | G. cf. vulgaris | Lehrmann, Daniel | Light microscope | ||
| 76 | Arenovidalina sp. | Arenovidalina sp. | Lehrmann, Daniel | Light microscope | ||
| 77 | Arenovidalina sp. | Arenovidalina sp. | Lehrmann, Daniel | Light microscope | n. sp. | |
| 78 | Foraminifera, benthic indeterminata | Foram benth indet | Lehrmann, Daniel | Light microscope | Involutinid | |
| 79 | Krikoumbilica pileiformis | K. pileiformis | Lehrmann, Daniel | Light microscope | ||
| 80 | Trochammina almtalensis | T. almtalensis | Lehrmann, Daniel | Light microscope | ||
| 81 | Turriglomina cf. magna | T. cf. magna | Lehrmann, Daniel | Light microscope | ||
| 82 | Turriglomina carnica | T. carnica | Lehrmann, Daniel | Light microscope | ||
| 83 | Turriglomina mesotriasica | T. mesotriasica | Lehrmann, Daniel | Light microscope | ||
| 84 | Malayspirina sp. | Malayspirina sp. | Lehrmann, Daniel | Light microscope | ||
| 85 | Foraminifera, benthic indeterminata | Foram benth indet | Lehrmann, Daniel | Light microscope | duostominid | |
| 86 | Tolypammina gregaria | T. gregaria | Lehrmann, Daniel | Light microscope | ||
| 87 | Piallina bronnimanni | P. bronnimanni | Lehrmann, Daniel | Light microscope | questionable | |
| 88 | Abriolina mediterranea | A. mediterranea | Lehrmann, Daniel | Light microscope | ||
| 89 | Galeanella sp. | Galeanella sp. | Lehrmann, Daniel | Light microscope | ||
| 90 | Austrocolomia marschalli | A. marschalli | Lehrmann, Daniel | Light microscope | ||
| 91 | δ13C, carbonate | δ13C carb | ‰ PDB | Lehrmann, Daniel | Mass spectrometer Finnigan MAT 252 | |
| 92 | Virtual geomagnetic pole latitude | VGP latitude | deg | Lehrmann, Daniel | Magnetometer, cryogenic, 2G-755R, thermal demagnetization | Techniques detailes in: ftp://rock.geosociety.org/pub/reposit/2006/2006229.pdf |
| 93 | Chemical Gamma Ray | Chem GR | API | Lehrmann, Daniel | Inductively coupled plasma - mass spectrometry (ICP-MS) | Chemical gamma ray API Units = (Potassium % * 16.32 x 0.83) + (Thorium ppm * 3.93) + (Uranium ppm * 8.09) |
| 94 | Magnetic susceptibility | MAGS | m3/kg | Lehrmann, Daniel | Susceptibility bridge | |
| 95 | Sample code/label | Sample label | Lehrmann, Daniel | |||
| 96 | Age, dated | Age dated | ka | Lehrmann, Daniel | Age, Uranium-Lead | CA-TIMS, mass spectrometer |
| 97 | Age, dated standard error | Age std e | ± | Lehrmann, Daniel | Age, Uranium-Lead | CA-TIMS, mass spectrometer |
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