Crustal lineament control on magmatism and mineralization in northwestern Argentina: geological, geophysical, and remote sensing evidence

A re-appraisal of the stratigraphy and volcanology of the Cerro Galán volcanic system, NW Argentina

“…We broadly concur with Sparks et al (1985) and Chernicoff et al (2002) regarding the importance of regional faults in bounding the caldera, but our new mapping leads us to a different conclusion from the original idea of the entire depression being the result of the 'foundering of a coherent cauldron block' to form the 'caldera' during the climactic eruption of the Cerro Galán Ignimbrite. We believe that the Cerro Galán caldera is a smaller trapdoor collapse that occupies only the central part of the caldera as previously defined.…”

“…Similarly, the northern collapse margin lies in an area now buried under the post-CGI dome complex, considerably inboard of the northern topographic margin. We suggest that an ESE-WNW regional fault akin to that identified by Chernicoff et al (2002; a major regional lineament connecting the Toconquis massif across the northern part of the resurgent dome through the eastern hinge) bounded the collapsing block to the north. Further interpretation of the aeromag- Fig.…”

Application of remote sensing and GIS in mineral resource mapping-An overview

“…Use of lineament intersection relationships for mineral exploration gains validity when defined by multi technique approaches, such as combinations of remote sensing, geophysical, and geological methods (e.g. Chernicoff et al, 2002). In addition, applicability can be tested by inclusion of known metallogenic information, which may help to identify favorable structural settings in a given regional context.…”

Spatial Confirmation of Major Lineament and Groundwater Exploration using Ground Magnetic Method near Mecheri Village, Salem District of Tamil Nadu, India

“…The proton magnetometer, also known as the proton precession magnetometer (PPM), uses the principle of Earth's field nuclear magnetic resonance (EFNMR) to measure very small variations in the Earth's magnetic field, allowing ferrous objects on land and at sea to be detected [14]. The principle of the instrument is that, a direct current flowing in a solenoid creates a strong magnetic field around a hydrogen-rich fluid (kerosene and water are popular, and even water can be used), causing some of the protons to align themselves with that field.…”