Using a more precise isotopic analysis, they showed that the methane found in the water wells came from both the formations where hydraulic fracturing occurred, and from the shallower formations.
22.
In 1992, trace-element studies of the strontium / calcium ratios in robust australopith fossils suggested the possibility of animal consumption, as they did in 1994 using stable carbon isotopic analysis.
23.
The location of the Grouse Creek block has been determined at some points by determining the age when minerals were metamorphosed through isotopic analysis of uranium, strontium, neodymium and lead.
24.
Native Americans mined copper on a small scale at this and several other locations, and evidence exists of copper trading routes throughout North America among native peoples, proven by isotopic analysis.
25.
He worked as a scientist for Monsanto Research Corporation, Mound Laboratories, in Miamisburg, Ohio, writing many articles about his research, including " Lithium isotopic analysis by nuclear magnetic resonance spectrometry ."
26.
Oxygen isotopic analysis of magmas from other APVC centres support the notion that the area of the APVC has been subject to arid climate for the duration of its active phase.
27.
Isotopic analysis may complement product measurements because it can measure degradation in the absence of metabolites and has the potential to cover sufficiently long time scales to assess transformation in groundwater.
28.
The isotopic analysis showed that feeding habits of these wolves were similar to the modern " coastal " British Columbia wolf, with both populations dependent on both marine and terrestrial prey.
29.
In October 2011 it was reported that isotopic analysis indicated that the carbonates in ALH84001 were precipitated at a temperature of 18 �C with water and carbon dioxide from the Martian atmosphere.
30.
But the isotopic analysis, coupled with examination of microscopic pits and scratches on the tooth surfaces, showed that not all of the six species were grazers : Some were browsers, and some had a mixed diet.
