amphibolic

• “Everything in this sad domain of deception and illusion is amphibolic and ambiguous.”

  Archive 2006-10-01

• “The amphibolic slate of Angostura, and masses of diorite in balls, with concentric layers, near Muitaco, appear to be superposed, not on mica-slate, but immediately on gneiss-granite.”

  Travels to the Equinoctial Regions of America

• “Southern Tyrol, amphibolic crystals, * disseminated in the mass, but without passing to syenite.”

  Travels to the Equinoctial Regions of America

• “Before it shows itself as a separate stratum, rising in small conic hills, the amygdaloid seems to alternate by layers with the diorite, which we have mentioned above as mixed with carburetted slate and amphibolic serpentine.”

  Travels to the Equinoctial Regions of America

• “Strata commonly called Primitive; granite, gneiss and mica-slate (or gneiss oscillating between granite and mica-slate); very little primitive clay-slate; weisstein with serpentine; granite with disseminated amphibole; amphibolic slate; veins and small layers of greenstone.”

  Travels to the Equinoctial Regions of America

• “Upper Orinoco in the hands of the Indians, seems to indicate the existence of a soil of euphotide, superposed on gneiss-granite, or amphibolic slate, in the eastern part of the Sierra Parime.”

  Travels to the Equinoctial Regions of America

• “We find at the back of this granitic, or rather mica-slate-gneiss soil of the southern chain, on the south of the Villa de Cura, a transition stratum, composed of greenstone, amphibolic serpentine, micaceous limestone, and green and carburetted slate.”

  Travels to the Equinoctial Regions of America

• “The amphibolic slates of Angostura run north 45° east, like the gneiss of Guapasoso which forms the bed of the Atabapo, and like the mica-slate of the peninsula of”

  Travels to the Equinoctial Regions of America

• “Parime, from the part which I examined in 6° of longitude, and 4° of latitude, we may believe it to be entirely composed of gneiss-granite; I saw some beds of greenstone and amphibolic slate, but neither mica-slate, clay-slate, nor banks of green limestone, although many phenomena render the presence of mica-slate probable on the east of the Maypures and in the chain of Pacaraina.”

  Travels to the Equinoctial Regions of America

• “The close connection observed in the strata of Parapara, between greenstone, amphibolic serpentine, and amygdaloids containing crystals of pyroxene; the form of the Morros of San Juan, which rise like cylinders above the table-land; the granular texture of their limestone, surrounded by trap rocks, are objects worthy the attention of the geologist who has studied in the southern Tyrol the effects produced by the contact of poroxenic porphyries.”

  Travels to the Equinoctial Regions of America

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