Dataset of Chronology, Geochemistry and Zircon Hf Isotopes of Permian Magmatites in the Middle Section of the Northern Margin of North China Craton

The middle section of the northern margin of the North China Craton (also referred to as the study area) is situated in the junction between the North China Craton and Bainaimiao arc. With the Chifeng –Bayan Obo fault as the boundary, its southern and northern parts fall within  different  geotectonic  units  and  have  different  basement  features.  Permian  magmatites are widely distributed across the northern margin of the North China Craton and are exposed on  both  sides  of  the  fault  zone.  Their  provenance  consists  of  very  complex  components, constricting  fuller  understanding  of  the  petrogenesis  and  tectonic  background  of  the magmatites. The Chifeng–Bayan Obo fault is covered by two geological survey projects, one involves four map sheets including the Beiliutumiao map sheet, and the other covers two map sheets  including  the  Wulanbulage  map  sheet.  In  this  paper,  the  testing  data  of  chronology, geochemistry, and zircon Hf isotopes of the Permian magmatites in all six map sheets from the two projects were integrated and analyzed based on the regional geological surveys on a scale of 1∶50 000 of the two projects. The aim is to provide detailed and accurate data for further research  of  the  provenance  and  the  tectonic-magmatic  evolution  process  of  Permian magmatites in the study area. Furthermore, Permian intrusions are also widely exposed in the study  area,  which  mainly  include  granodiorites,  (quartz)  diorite,  monzogranite,  and  a  small number of syenite granites. Permian volcanics are mainly distributed to the south of the fault zone  and  consist  of  andesitic  and  dacitic  volcanics  as  well  as  a  small  number  of  rhyolitic volcanics.  As  shown  by  zircon  U –Pb  dating,  the  Permian  magmatites  within  the  study  area were  mainly  formed  in  mid –late  Permian,  and  the  magmatites  on  the  northern  and  southern sides  of  the  fault  zone  have  distinctly  different  zircon  Hf  isotopic  characteristics.  In  short, zircon Hf isotopes are rich on the southern side but depleted on the northern side. The datasets of chronology, geochemistry and zircon Hf isotopes of Permian magmatites in the study area
(also referred to as the Dataset) include three.xls files (Zircon U–Pb dating data.xls, Zircon Hf
isotope data.xls and Whole-rock geochemistry data.xls), which are comprised of data on the
petrogeochemistry of 104 samples, zircon U–Pb dating of 16 samples and zircon Hf isotopes of
12 samples. Samples collected for the Dataset were mainly tested in the Experiment and Test
Center of Tianjin Center, China Geological Survey, and thus the data obtained are credible.