... are reviewed and discussed. Results obtained, especially in the Tiwi geothermal field of southeastern Luzon which was the first to be studied, are evaluated and potentials are estimated. The sequential investigations undertaken in the study of a particular geothermal field and the interplay of geologic...

...F ig . 2. Map of the Tiwi geothermal field and surrounding area. Only wells discussed in the text or included in the cross section (A-A 1 ; Fig. 3 ) are shown. Wells that produce acidic reservoir fluids occur within the hachured region (area of corrosive production). Corrosive fluids...

.... 46 , p. 1969 – 1973 , https://doi.org/10.1016/0016-7037(82)90135-1 . Gambill , D.T. , and Beraquit , D.B. , 1993 , Development history of the Tiwi geothermal field, Philippines : Geothermics , v. 22 , p. 403 – 416 , https://doi.org/10.1016/0375-6505(93)90028-L . Gan...

... the evolution of ore deposits ( Blundell, 2002 ), oil migration ( Fink et al., 2016 ), fault control of geothermal reservoirs ( Jolie et al., 2015 ), and earthquake recurrence intervals ( Cowan, 1999 ). For tectonics research, the dating of brittle structures is vital for comprehending shallow-level deformation...

... , Porosity and permeability of the Tiwi geothermal field, Philippines, based on continuous and spot core measurement : Geothermic , v. 33 , p. 87 – 107 . Storey , B. C. , T. Alabaster , M. J. Hole , R. J. Pankhurst , and H. E. Wever , 1992 , Role of subduction-plate...

.... , 2005 . Modeling the utilisation of area Dachnyi, Mutnovsky geothermal field in connection with the supply of heat-transfer agent to the 50 MW Mutnovsky Geologic Power Station . Vulcanologiya i Seismologiya , No. 5 , 39 – 54 . Kuhn , M...

..., the higher values being among the most iron-rich reported for prehnite in a hydrothermal environment. Prehnites from a diabase sill in the Heber geothermal field of California have mole fractions of octahedral Fe 3+ ranging from 0.03 to 0.3. The Way Linggo prehnites formed below 220° C, some 20–30° C lower...

... Palaeozoic of Wales or the Devonian of Australia (Cas et al. 1981). NE MALINAO TlWl 0 10 20 km FIG. 23. Horizontal section of Malinao Volcano and Tiwi geothermal field, Philippines (in part after Dumapit 1973). Problems of interpreting palaeovolcanics 181 C . \ Pre-volcanic B Epiclastic sedlments L__I...

.... Stimac , 2004 , Geochemical response to production of the Tiwi geothermal field, Philippines : Geothermics , 33 , 57 – 86 , doi: 10.1016/j.geothermics.2003.06.004 . GTMCAT 0375-6505 Thelen , W. , M. Clark , C. Lopez , C. Loughner , H. Park , J. Scott , S...

... , Turner FJ , Verhoogen J ( 1958 ) Metamorphic reactions and metamorphic facies . Geol Soc Am Mem 73 : 1 – 259 Gambill DT , Beraquit DB ( 1993 ) Development history of the Tiwi geothermal field, Philippines . Geothermics 22 : 403 – 416 Gamble JA , Smith...

... . Porosity and permeability of the Tiwi geothermal field, Philippines, based on continous and spot core measurements . Geothermics 33 , 187 – 197 . Takachashi , R. , Matsueda , H. , Okrugin , V. , 2001 . Epithermal gold and silver mineralization...

... T.S. Golla G.U. , 2004 , Porosity and permeability of the Tiwi geothermal field, Philippines, based on continuous and spot core measurements : Geothermics , v. 33 , no. 1–2 , p. 87 – 107 , doi:10.1016/j.geothermics.2003.03.002 . Streck M.J. Grunder A.L. , 1995...

...-hosted geothermal fields, and evidence of their presence in many epithermal deposits, the thermal and chemical evolution of these fluids as they descend has not yet been well characterized. In this paper, we first describe mineralogical and fluid-inclusion data from the active geothermal system at Karaha...

.... , 2004 , Porosity and permeability of the Tiwi geothermal field, Philippines, based on continuous and spot core measurements : Geothermics , v. 33 , p. 87 – 107 . Stimac J. Nordquist G Suminar A. Sirad-Azwar L. , 2008 , An overview of the Awibengkok geothermal system...

... and Range extensional geothermal systems —Jason R. McKenna and David D. Blackwell 457 Reactive transport modeling of injection well scaling and acidizing at Tiwi field, Philippines —Tianfu Xu, Yvette Ontoy, Phil Molling, Nicolas Spycher, Mauro Parini, and Karsten Pruess 477 Simulation of water...

... multistage evolution at the Tiwi geothermal system, Philippines, with at least two main episodes of significant increase in temperature (up to 150°C) contemporaneous with initial deposition of sericite. Similar thermal evolution has been documented in several other geothermal fields (e.g., Valles Caldera...

... rare occurrence in fine-grained crystals at Waihi indicates a temperature of 240° to 260°C by analogy with andesite-hosted geothermal fields in the Philippines ( Reyes, 2000 ). The rarity of epidote could also indicate that the hydrothermal fluid had a content of greater than about 0.03 m CO 2...

... the historical, current, and sanctioned developed fields in the North West Shelf basins was 138 TCF of gas, 3100 million bbl of oil, and 2600 million bbl of condensate. Discovered undeveloped resources are currently estimated to be 97 TCF of gas, 350 million bbl of oil, and 1600 million bbl of condensate...

...-Oligocene around the Saih Hatat antiform (Seeb Formation). The Paleogene sequence, up to 2 km-thick, is followed upward by 2 to 4 km-thick Neogene deposits in the Batinah coast-Sohar basin and Tiwi-Sur area [ Le Métour et al., 1992 ; Carbon, 1996 ; Ravaut et al., 1998 ]. The structure...