M.P. Iglesia Llanos, R.M. Palma, D.A. Kietzmann
2 013
Latinmag Letters, Volume 3, Special Issue (2013), OB022, 1-2. Proceedings Montevideo, Uruguay
Se efectuó un estudio paleomagnético en la zona del Arroyo Loncoche (provincia de Mendoza), donde aflora una sección de c. 300 m de espesor de rocas sedimentarias portadoras de amonites correspondientes a la Formación Vaca Muerta (Tithoniano-Berriasiano). Los niveles de muestreo paleomagnético fueron ubicados de acuerdo a las Zonas de amonites de la Región Andina que comprenden desde la Zona de Virgatosphinctes mendozanus a la Zona de Spiticeras damesi . Luego de someter las muestras a desmagnetización térmica y por campos alternos, se observaron comportamientos magnéticos confiables. De este modo, fue posible aislar una zona de polaridad reversa en la base de la Formación Vaca Muerta, y otra normal en la parte superior. Estos resultados preliminares son consistentes con la escala de polaridades geomagnéticas internacional.
A palaeomagnetic research was carried out in the Arroyo Loncoche area (provincia de Mendoza), where
a 300 m thick succession of sedimentary rocks bearing ammonites: Vaca Muerta Formation (Tithonian-
Berriasian) is outcropping. Levels of paleomagnetic sampling were located according to the ammonite
zoning in the Andean region, which comprises from Virgatosphinctes mendozanus Zone to Spiticeras damesi Zone. Afterwards imparting alternating field and thermal demagnetizations, reliable magnetic behaviors were observed. Then, it was possible isolate a reverse polarity zone toward the base of Vaca Muerta Formation and another normal polarity zone toward the upper part. These preliminary results are consistent with the international geomagnetic polarity scale.
a 300 m thick succession of sedimentary rocks bearing ammonites: Vaca Muerta Formation (Tithonian-
Berriasian) is outcropping. Levels of paleomagnetic sampling were located according to the ammonite
zoning in the Andean region, which comprises from Virgatosphinctes mendozanus Zone to Spiticeras damesi Zone. Afterwards imparting alternating field and thermal demagnetizations, reliable magnetic behaviors were observed. Then, it was possible isolate a reverse polarity zone toward the base of Vaca Muerta Formation and another normal polarity zone toward the upper part. These preliminary results are consistent with the international geomagnetic polarity scale.
https://www.researchgate.net/profile/Diego_Kietzmann/publication/259871325_First_magnetostratigraphic_result_in_the_Upper_Jurassic-Cretaceous_Neuquen_Basin_Argentina/links/0f31752e5083667c88000000/First-magnetostratigraphic-result-in-the-Upper-Jurassic-Cr
