The purpose of this research is to comprehend the geological and stratigraphical evolution of Fiorina, Ptolemaida, Kozani and Sarandaporo graben. This graben ex tends North of the Greek borders and is more than 150

The island of Crete has been thoroughly explored, by various organizations

This paper presents the genetic hypothesis of αn uranium mineralization observed in Eastern Chalkidiki-Greece. In the area of Stratoni (location Asprochomata) a uranium mineralization is expressing by disseminated primary (orthobrannerite) and secondary (torbernite) U minerals, in the granodioritic body of this area. Genetically it may be the result of uranium redistribution, which occurs in the resisting accecory minerals (e.g monazite) of the granodiorite, by magmatic or meteoric hydrothermal fluids of low temperature. The mineralized granodiorite of Stratoni gives no evidence of a metalliferous pluton, based on the study of hydrothermally altered samples and this ascertainment is a fact that should be confronted with a lot of carefull thought. In the granite of Arnea area, uranium mineralization is in generally absent, excluding some poor one’s, located along the contacts of the granite with small remnants of the hosting rock, expressed in the form of impregnations or veinlets. The possible cause for its formation being the interaction of a secondary low temperature hydrothermal system mainly of meteoric water participation (convective hydrothermal system) with the granite and the hosting wall-rock minerals. The granite of Arnea indicates all the characteristics of a metalliferous granitoid.

This study concerns the U-Th ore deposits containing also Ti and R.E.E., located at the area between Nea Peramos and Loutra Eleftheron, of the Kavala prefecture, North Greece, in the contemporaneous littoral zone. From this littoral zone of 25 Km. total length and 50 m. average width, were collected 142 samples of shoreside surficial sand and 128 specimens from depths up to 2 meters. In the contemporaneous littoral zone very high surficial levels of Uranium were found, (with an average value of 22 ppm U and a highest value of 92 ppm U), as a result of today's and mainly older sea wave-action, at the lower parts of the sandy shoreside formations, and with the highest expected enrichment in the bedrock cavities. Initial samples of U enriched sands (up to 50 ppm) are considered to be a naturally grated multimetal ore of Ti, U-Th, R.E.E.,.Au and other metals for high-value technological applications. The concentrations of the above metals are higher of those known to other similar ores (2.5%, 50-1600 ppm, 11.000 ppm and 250 mg/m3 respectively) and can be multiplied with a light water-metallurgical processes. In the present shoreside zone, lower layers of sands formed out with the processus of natural grate action, are mainly the medium grain sands and secondarily the fine grain variety. These natural enrichments due to sea wave-action, form selective concentrations of U and R.E.E. enriched allanite, which are responsible for the content in metals of high-value technological applications. On the contrary, the coexisting minerals of titanite, zircon, apatite, and epidote, as well as the iron minerals, do not much contribute in the increment of this content.

The objective of the present work is the assessment of the lignite contribution to the energy balance of Greece, according to the creation processes and the chronological classification.The lignite deposits known so far in Greece have been discovered and researched from the scientists of IGME in the course of evolution since 1948 (Greek Geological Survey), 1950 (Institute of Geology and Surface Research), 1973 (National Institute of Geological and Mineral Exploration) and finally in its current form in 1976 (Institute of Geology and Mineral Exploration) and are divided into (a) "productive", (b) future "productive" and (c) no financial interest in power generation. A project, co-financed by the Greek Government and the European Union, is currently implemented, aiming at the recovery of the latter in non-electrical purposes with very good results in the first