• Valentino Straser ITSOS “C.E.Gadda” – 43045 Fornovo Taro Parma




mineral horizons, electromagnetic fields, solifluction, soil creep, circles in grass, piezoelectricity


The occasional appearance of circular shapes in meadows and farmland located on slopes usually affected by gravitational phenomena, offered an occasion for verifying the possible relation between the position of the circles in the grass, the gravitational movement of the slope affecting its mineral horizons and the variations of electric and static magnetic fields close to the circular shapes and in the surrounding area. The stress caused by the “creeping” movement in the uderlying ground turned out to be in direct relation with the variation in the electric and magnetic fields caused by piezoelectric and piezomagnetic minerals such as quartz. The onset of the electromagnetic process involves the conversion of electric energy on the surface into an area of spherical shape which is linked with a different growth of herbaceous species compared to the surrounding vegetation.


BALBACHAN M. Y., PARKHOMENKO E. I. (1983). Electret Effect during rupture of Rocks. Isvestiya, Physics of the Solid Earth, 19:661–665.

BISHOP J. R. (1981). Piezoelectric effects in quartz-rich rocks. Tectonophysics, 77:297–321.

BRADY B. T., ROWELL G. A. (1986). Laboratory investigation of the electrodynamics of rock fracture. Nature, 321:488–492.

DERR, J., PERSINGER, M. (1990). Luminous Phenomena and Seismic Energy in the Central United States Journal of Scientific Exploration, 4 (I):55-69.

DERR, J. S. (1986). Luminous phenomena and their relationship to rock fracture. Nature, 321:470–471.

FINKELSTEIN D., HILL, U. S., & POWELL, J. R. (1973). The piezoelectric theory of earthquake lightning. Journal of Geophysical Research, 78:992–993.

FREUND, F. (2002). Charge generation and propagation in rocks. Journal of Geodynamics, 33:545–572.

LEVENGOOD, W. C. (1994). Anatomical anomalies in crop formation plants. Physiologia Plantarum Journal, 92:356-363.

LEVENGOOD, W. C. & TALBOTT, N. P. (1999). Dispersion of energies in worldwide crop formations. Physiologia Plantarum Journal, 105(6):15-624.

MEADEN, T. (1991). Circles from the sky-A new topic in atmospheric research. In Circles from the Sky (pp. 11-12). London: Souvenir Press Ltd.

ST-LAURENT, F. (2000). The Saguenay, Quebec, earthquake lights of November 1988–January 1989. Seismological Research Letters, 71:160–174.

ST-LAURENT, F., DERR, J. & FREUND, F. (2006) Earthquake lights and the stress-activation of positive hole charge carriers in the rocks. Physics and Chemistry of the Earth, 31:305-312

STRASER V. KOKUS M. (2008) The August 19, 2008 earthquake in the Parma zone Italy occurred according to the prediction. New Concepts in Global Tectonics Newsletter, 48:3-4.

STRASER,V. (2007) Precursory luminous phenomena used for earthquake prediction. The Taro Valley, North-Western Apennines, Italy. New Concepts in Global Tectonics Newsletter, 44:17-31.

TEODORANI M. (2004) A long-Term Scientific Survey of the Hessdalen Phenomenon. Journal of Scientific Exploration, 18:217-251.

TORE WESSEL-BERG T. (2004). Ball Lightning and Atmospheric Light Phenomena: A Common Origin? Journal of Scientific Exploration, Vol. 18(3):439–481,

ZANZUCCHI, G. (1980) Lineamenti geologici dell’Appennino parmense. Note illustrative alla Carta e sezioni geologiche della Provincia di Parma e Zone limitrofe (1:100.000). In: Volume dedicato a S. Venzo, Step Parma, p. 201-233.




How to Cite

Straser, V. (2009). MINERAL HORIZONS, ELECTROMAGNETIC FIELDS AND CIRCULAR SHAPES IN THE GRASS. EQA - International Journal of Environmental Quality, 2(2), 39–46. https://doi.org/10.6092/issn.2281-4485/3820