Subject area	Earth Sciences
More specific subject area	Petrology, Geochemistry
Type of data	Microscopy images, tables, figures and graphs
How data was acquired	Major and trace element concentrations were determined on these sample tablets (Major elements as oxides in weight %, trace elements in ppm) using a sequentially operating, wavelength-dispersive X-ray fluorescence spectrometer (SIEMENS SRS 303 AS) on a volatile-free base. Rare Earth Elements was conducted by atomic emission spectroscopy, using inductively coupled plasma excitation at an ICP-AES (Jobin YVON Model 38 plus;Table 10, Table 11, Table 12, Table 13, Table 14, Table 15). 35 samples were analyzed and pulverized and by ICP-ES (oxides, Ba, Ni, Sc), and ICP-MS (trace and rare-earth elements) at ACME Laboratories, Vancouver, Canada.
Data format	Raw (photos), Analyzed, processed and filtered
Experimental factors	Thin sections were prepared, point-counted and photographed. 34 samples were crushed, pulverized, LOI (loss on ignition, the pre-annealed material was mixed with lithium tetraborate (Li2B4O7) in the ratio 2:1, melted at 1,400 ° C in a graphite crucible and poured into platinum pouring bowls.
Experimental features	Petrological and geochemical analysis of the rocks of The El Tranquilo Anticline
Data source location	El Tranquilo Anticline, Deseado Massif, Patagonia, Argentina
Data accessibility	Data available within this article
Related research article	Jenchen, U (2018).Petrography and geochemistry of the Triassic El Tranquilo Group, Deseado Massif, Patagonia, Argentina: Implications for provenance and tectonic setting. Journal of South American Earth Sciences, 88: 530-550. –https://doi.org/10.1016/j.jsames.2018.09.007[1]