Abstract
The Carboniferous Tertiary of Antioquia (TCA), published by Dr. Jakob Emil Grosse in 1926, is one of the most influential scientific results of the Ordinance 16 of 1918 of the Honorable Departmental Assembly of Antioquia. The work began with the main objective of quantifying the coal reserves of Antioquia, and showing their surface extension on a scale of 1:50 000, in a region that includes the Arma river to the Puente de Occidente and from the western side of the Cauca River to the Romeral lineament and the plains of Ovejas. As a result, extensive work comprising petrological, structural, and economic geology studies was published in a manuscript published in Spanish and German, plus four attached maps, including coal, gold, silver, kaolin, and carbonate mines, among others. In the present work, the four TCA maps were digitized at a scale of 1:50 000 with Bessel 1841 datum and created a unified file in .kml format, which can be used directly in field trips, via Google Earth on cell phones, tablets, or computers. The metadata associates the information in the TCA with the Servicio Geológico Colombiano for the year 2015. In addition, 480 thin sections were scanned, which were donated by Dr. Grosse to the Escuela Nacional de Minas and today are in the Museum of Geosciences of the Faculty of Mines of the Universidad Nacional de Colombia. The geospatial information contained in each thin section was interpreted and georeferenced, obtaining, as a result, a list with north and west geographic coordinates, in degrees, minutes, and seconds. This unpublished information is available in the supplementary material of this article. Finally, nine field trips were made to the places referenced in 23 photographs of the TCA between 1920 and 1923 to take their current equivalent and thus carry out a multi-temporal analysis of the TCA.
Highlights
In 1918, the Honorable Departmental Assembly of Antioquia established that the governor’s office would have the geographical and geological charts and maps of the department drawn up and published, per Ordinance No 16 of April 6, 1918, for which a board called the Junta del Mapa de Antioquia (Zuluaga et al, 2005) was created
The metadata associates the information in the Terciario Carbonífero de Antioquia (TCA) with the Servicio Geológico Colombiano for the year 2015
Dr Grosse produced a classic book of Antioquian geology, The Carboniferous Tertiary of Antioquia (TCA) (Grosse, 1926), with four associated maps at 1:50 000 scale (Figure 1), for the region between the Arma River and the West Bridge, from the eastern bank of the Cauca River to the Romeral cleaver and the Ovejas plains
Summary
On the recommendation of Dr Scheibe and Dr Juan de la Cruz Posada, professor at the Escuela Nacional de Minas in Medellín at that time (Posada, 1936), Dr Jakob Emil Grosse, a student of Professor Scheibe in Charlottenburg (Germany), was hired to quantify the coal reserves and show their surface extent on a 1:50 000 scale plan, mainly for the Antioquia Railway project In this way, Dr Grosse produced a classic book of Antioquian geology, The Carboniferous Tertiary of Antioquia (TCA) (Grosse, 1926), with four associated maps at 1:50 000 scale (Figure 1), for the region between the Arma River and the West Bridge, from the eastern bank of the Cauca River to the Romeral cleaver and the Ovejas plains. The present work aims to update the information of the geological and geo-spatial sampler of the four maps, thin sections, and photographic records of the TCA, showing it in an unpublished and open access way utilizing the supplementary material associated with the manuscript
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
