Fig 5 - uploaded by Kord Ernstson
Content may be subject to copyright.
Source publication
The Iberian System in NE Spain is characterized by a distinctive graben/basin system (Calatayud, Jiloca, Alfambra/Teruel), among others, which has received much attention and discussion in earlier and very recent geological literature. A completely different approach to the formation of this graben/basin system is provided by the impact crater chai...
Contexts in source publication
Context 1
... deformations can be a new and noteworthy feature that arises in the modification phase of impact cratering during converging and diverging gravitational collapse movements. Very simple models of these strike-slip deformations have been sketched in Fig. 14, which should serve to classify the very unusual morphological conditions in the Singra area (Fig. 15). A look at the DTM in Fig. 15 suggests that the postulated side crater with the uplift and a partially formed inner ring could be the result of exactly this strike-slip deformation. It is important to understand that these structures have not been noticed in previous mapping, where only a more or less elongated Rhaetian-Liassic stripe ...
Context 2
... feature that arises in the modification phase of impact cratering during converging and diverging gravitational collapse movements. Very simple models of these strike-slip deformations have been sketched in Fig. 14, which should serve to classify the very unusual morphological conditions in the Singra area (Fig. 15). A look at the DTM in Fig. 15 suggests that the postulated side crater with the uplift and a partially formed inner ring could be the result of exactly this strike-slip deformation. It is important to understand that these structures have not been noticed in previous mapping, where only a more or less elongated Rhaetian-Liassic stripe with partial anticlinal ...
Context 3
... hill (Fig. 4), a remarkable lateral extension of the central uplift chain right through the middle of the Jiloca graben, as it has always been interpreted so far, becomes evident. Apart from the geologically fundamentally alien stratigraphic elevations in the middle of the graben, this insight is made possible above all by the high-resolution DTM (Fig. 15) and aerial imagery (Google Earth, Fig. 16) , which clearly show impact-related features. small image inset, Fig. 17 shows the profiles of the terrain elevations taken from the Google map. The topographical peculiarities should not be overstressed here, especially since the geological maps give practically no better stratigraphic ...
Context 4
... (Figs. 16, 17) strongly supports the reality of this Singra-Jiloca complex impact structure as a lateral companion to the main impact chain extending between the Rubielos de la Cérida uplift and Teruel. For the time being, questions remain unanswered regarding the extension of the SingraJiloca structure in the form of the inner ring to the north (Figs. 15, 16) and a certain topographic west-east asymmetry at the edge of the Sierra Palomera (Figs. 16). From the point of view of a complex impact cratering, the formation of the central mountain chain with primary compression and subsequent partial collapse and laterally strong pressure to the outside - here especially in the area of the ...
Citations
Abstract. - We present a new compilation of previously abundantly studied and published shock effects in minerals and rocks of the Middle Tertiary Rubielos de la Cérida Impact Basin in northeastern Spain. Typologically, we organize by: shock melt - accretionary lapilli - diaplectic glass - planar deformation features (PDF) - deformation lamellae in quartz - isotropic twins in feldspar - kink banding in mica and quartz - micro-twinning in calcite - shock spallation. Included are the newly associated Jiloca-Singra impact in the so-called Jiloca graben and the Torrecilla ring structure, which immediately adjoins the Rubielos de la Cérida basin to the northeast. The compilation and presentation also opposes once more the still existing fundamental rejection of an impact genesis of the Azuara impact event by leading impact researchers of the so-called impact community and by regional geologists from the University of Zaragoza.
We use Schmieder and Kring's article to show how science still works within the so-called "impact community" and how scienti c data are manipulated and "rubber-stamped" by reviewers (here, e.g., C. Koeberl and G. Osinski). We accuse the authors of continuing to list the Azuara and Rubielos de la Cérida impact structures and one of the world's most prominent ejecta occurrences of the Pelarda Fm. in Spain 1 2 as non-existent in the compilation. The same applies to the spectacular Chiemgau impact in Germany, which has been proven by all impact criteria for several years. For the authors' dating list, we propose that the multiple impact of Azuara is included together with the crater chain of the Rubielos de la Cérida impact basin as a dated candidate for the third, so far undated impact markers in the Massignano outcrop in Italy.
