Challenging the  official geological paradigm

An innovative and original theory by Prof. Vicente Sanchez-Cela (deceased in 2017)

Danilo Anton

Let me share some ideas of the Spanish geologist Professor Vicente Sanchez-Cela (2017. I think he has developed a theory about the formation of the earth's crust, including the origin of granites (the most common rocks in the crust) that deeply changes many concepts that are usually accepted in geology,

Prof. Sanchez-Cela is a geologist with vast experience and extensive knowledge of petrology, petrography, mineralogy and structural geology. In his theory he holds that deep mantle rocks have a similar chemical composition to the Earth crust but different crystal structures and higher density. The outer mantle rocks gradually have lost density through change of crystalline phase of its minerals. These processes generate heat, causing magmatic chambers, intrusions and volcanism, There ìs neoformation of the crust with expansion of the earth's circumference. It also puts into question the currently accepted theory of plate tectonics and continental drift.

Sanchez-Cela's theory is revolutionary and may arise smiles of disdain in many academics that are convinced of the accuracy of the official paradigm and do not accept the challenge that the new theory is presenting.

I think that the system proposed by Sanchez-Cela is original, innovative and seduces from the logical point of view. May be is no true, or perhaps is only partially accurate, but I'm sure it can incorporate valuable elements to the current geological interpretations about the origin of the Earth's crust and continents.

In the following text, I present the outlines of Vicente Sanchez-Cela's theory that I believe should be considered very seriously and finally would like to pay tribute to this Spanish scientist with long experience who has dared to rethink the geological orthodoxy from his extensive experience and deep theoretical knowledge. I invite you to share some of his ideas in this same blog:: Theory of the Origin of the Earth's Crust.

New theory on the origin of the Earth crust and granites

Danilo Anton
According to the theory of Vicente Sanchez Cala, there are no fundamental compositional changes in the rocks deep into the crust and the mantle.
He assumes that composition of mantle materials are denser, but with similar chemical formulas.
Therefore  higher density mantle silicates become lower density silicates. Coesite (density: 2.92), and stishovite, (density 4.35) change in phase transforming into quartz, K-Na Hollandite: (K,Na) AlSi₃O₈, (density: 4.5), silicated perovskite (Mg,Fe) SiO3 and CaSiO3, (density 4).and post-perovskita MgSiO₃; pPv,.(density 4) become Ca and Na feldspahts, amphibols, pyroxenes and biotites, and so on..
The crust is therefore a modification of the mantle changing mainly the crystalline structure and density but NOT the chemical composition.
Densialites become granites. Densialiteses are the rocks of the mantle and granites are the rocks of the crust, 
Moreover, we can say that the granitic external layer of the Earth is what we call crust.

 

Revolutionary theory about  the origin of the Earth crust

According to Prof. Vicente Sanchez-Cela.

Danilo Anton

It all started with the accretion and compaction of planetesimals for the formation of the planet Earth.

As a result of these processes impact minerals of high density were formed. They were related to the impactites (rocks formed after a meteoric impact). These dense minerals had a very similar composition to the crust (quartz and feldspar) but with higher density.

In the crust silicon dioxide (SiO2) crystallizes as quartz but in a high density (mantle) environment crystallized in higher density SiO2 minerals such as coesite and stishovite.

It should be noted that quartz density is 2.65, while coesite and stishovite densities are respectively 2.92 and 4.35. All three (quartz, coesite and stishovite) have the same formula (SiO2). Another difference betweem these three minerals is the packing of their atoms, quartz is trigonal, coesite is monoclinic and stishovite is tetragonal.

Similarly, crust feldspars with density 2.56 (potassium feldspar) and 2.61 (sodium feldspar), have been preceded (during planetary formation and subsequent geological eras) by minerals of high density: K Hollandite and Na Hollandite with approximate density 4. Both crystallize in the monoclinic system. Other high density minerals that may exist in the mantle are the perovskite silicate (magnesium iron silicate and calcium silicate) and post-perovskite (magnesium silicate). The latter have densities higher than 3.

According to this approach, we can consider that in the crust the family of silicate minerals of low density (granitic) predominate while the high density family of silicate minerals (which Sanchez Cela call " densialites ") are dominant in the mantle.¹

Despite having different densities the chemical composition of both petro-mineralogical groups (crust and mantle groups) are similar.

Sanchez-Cela's theory is based on the phase changes of dense minerals in the outer mantle (coesite, stishovite, hollandites, perovskites and post-perovskites) which increase in volume decreasing their density. The typical mineral phase of low density silicates (quartz, feldspars) is generated in this way. This change in phase is exothermic producing magmatic fusion, intrusions and volcanic eruptions.

At the same time, the expansion in volume of the rock masses produce the formation of orogenic changes in continents and oceans and other protruding geological and geomorphologic features.

Danilo Antón, based on the theory of Vicente Sanchez Cela (La Energía en los Procesos Geológicos, 2005).

¹ Silicon dioxide SiO2, currently crystallizes mainly as quartz, before crystallized with higher density forming coesite or stishovite. It should be noted that quartz has a density of 2.65, coesite, 2.92 and stishovite 4.35. All three have the same formula (SiO2). Another difference is the packing of atoms. quartz is trigonal, coesite is monoclinic and stishovite tetragonal.

Similarly feldspars with density 2.56 (potassium feldspar) and 3.61 (sodium feldspar) in the crust, have been preceded (when planetary formation and subsequent geological eras) by higher density minerals: K Hollandite and Na Hollandite with approximate density of 4. Both crystallize in the monoclinic system. Other high density minerals that may existing in the mantle are the perovskite silicate (magnesium iron silicate and calcium silicate) and post-perovskite (magnesium silicate).

Challenging the  official geological paradigm

An innovative and original theory by Prof. Vicente Sanchez-Cela

Danilo Anton

Let me share some ideas of the Spanish geologist Professor Vicente Sanchez-Cela. I think he has developed a theory about the formation of the earth's crust, including the origin of granites (the most common rocks in the crust) that deeply changes many concepts that are usually accepted in geology,

Prof. Sanchez-Cela is a geologist with vast experience and extensive knowledge of petrology, petrography, mineralogy and structural geology. In his theory he holds that deep mantle rocks have a similar chemical composition to the Earth crust but different crystal structures and higher density. The outer mantle rocks gradually have lost density through change of crystalline phase of its minerals. These processes generate heat, causing magmatic chambers, intrusions and volcanism, There ìs neoformation of the crust with expansion of the earth's circumference. It also puts into question the currently accepted theory of plate tectonics and continental drift.

Sanchez-Cela's theory is revolutionary and may arise smiles of disdain in many academics that are convinced of the accuracy of the official paradigm and do not accept the challenge that the new theory is presenting.

I think that the system proposed by Sanchez-Cela is original, innovative and seduces from the logical point of view. May be is no true, or perhaps is only partially accurate, but I'm sure it can incorporate valuable elements to the current geological interpretations about the origin of the Earth's crust and continents.

In the following text, I present the outlines of Vicente Sanchez-Cela's theory that I believe should be considered very seriously and finally would like to pay tribute to this Spanish scientist with long experience who has dared to rethink the geological orthodoxy from his extensive experience and deep theoretical knowledge. I invite you to share some of his ideas in this same blog:: Theory of the Origin of the Earth's Crust.