ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1985-1989  (2)
  • 1970-1974  (8)
Collection
Keywords
Years
Year
  • 1
    facet.materialart.
    Unknown
    Rare gases from stepwise heating of lunar rock 12013 (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: He, Ne, Ar and Xe from stepwise heating of Apollo 12 lunar rock 12013, discussing radiogenic and spallation components and He 3 and Ne 21 cosmic ray exposure ages
    Keywords: SPACE SCIENCES
    Type: ; ADEMIE DES SCIENCES
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Noble gases and the early history of the Earth: Inappropriate paradigms and assumptions inhibit research and communication (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The development of models as tracers of nobel gases through the Earth's evolution is discussed. A new set of paradigms embodying present knowledge was developed. Several important areas for future research are: (1) measurement of the elemental and isotopic compositions of the five noble gases in a large number of terrestrial materials, thus better defining the composition and distribution of terrestrial noble gases; (2) determinations of relative diffusive behavior, chemical behavior, and the distribution between solid and melt of noble gases under mantle conditions are urgently needed; (3) disequilibrium behavior in the nebula needs investigation, and the behavior of plasmas and possible cryotrapping on cold nebular solids are considered.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Inst. Workshop on the Early Earth: The Interval from Accretion to the Older Archean; p 37-38
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Non-atmospheric noble gases from CO(sub 2) well ga (1988)
    In:  CASI
    Details
    Publication Date: 2013-08-29
    Description: In recent years a number of studies of both terrestrial and extraterrestrial material has allowed the piecing together of a picture of events occurring in the early solar system (4.5 Gyr ago), including the formation of the earth. However, before this picture can be completed with an appropriate amount of detail it will be necessary to make further advances. One of the areas where knowledge is lacking is the chemical and isotopic composition of the earth as a whole. The lack of knowledge has less to do with the capabilities of modern techniques than with the availability of samples to study. About 99.6 percent of the earth's mass is contained in the mantle and core, leaving less that 1 percent in the crust and atmosphere. Although the crust is derived from the mantle it has undergone extensive changes and it is therefore difficult (although not impossible) to use crustal material to study events occurring 4.5 Gyr ago. More information about the early earth could be obtained from studies of the mantle but it is difficult to obtain mantle material, because the mean thickness of the crust is 17 km, much greater than even the deepest mines or drill shafts. The two types of available mantle samples are discussed.
    Keywords: ASTROPHYSICS
    Type: Lunar and Planetary Inst., Nineteenth Lunar and Planetary Science Conference. Press abstracts; p 8-9
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    Argon-40-argon-39 dating of Apollo sample 15555. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: An age of 3.33 (plus or minus 0.05) b.y. was obtained for Apollo 15 sample 15555 by argon-40-argon-39 dating. The age of rock 15555, a basalt from the rim of Hadley Rille, establishes an upper limit to the age of the rille. The basalt flows filling the Hadley Rille section of the Imbrium basin postdate the formation of the basin - as measured by the Apollo 14 samples of the Fra Mauro formation - by at least 500 m.y. Therefore, the mare basalts cannot be simple impact melts but rather must result from some igneous activity on the moon.
    Keywords: SPACE SCIENCES
    Type: Science; 175; Jan. 28
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 5
    facet.materialart.
    Unknown
    Studies of K-Ar dating and xenon from extinct radioactivities in breccia 14318; implications for early lunar history (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The lunar breccia 14318 is one of three Apollo-14 breccias containing substantial amounts of parentless xenon from the spontaneous fission of extinct Pu-244. The argon and xenon contained in this breccia were studied by stepwise heating of pristine and neutron-irradiated samples. The isotopic composition of xenon from fission, determined by an improved method, is shown to be from Pu-244. Concentrations of this fissiogenic xenon are in substantial excess (15-fold) of what could be produced by spontaneous fission of U-238. The breccia is found to contain abundant trapped argon with an Ar-40/Ar-36 ratio of roughly 14. Otherwise, the argon is radiogenic and gives a convincing K-Ar age of 3.69 plus or minus 0.09 b.y. by the stepwise Ar-40/Ar-39 method, nearly in agreement with ages for other Apollo-14 breccias.
    Keywords: SPACE SCIENCES
    Type: Geochimica et Cosmochimica Acta; 38; Mar. 197
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 6
    facet.materialart.
    Unknown
    Ar-40/Ar-39 studies of lunar breccias (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Results of argon dating of lunar breccias from Apollo 14, 15, and 16 samples are presented. Basic chronological information was obtained on samples of 14270, 15362, 15455, and 63335,3; these samples averaged about 4 billion years in age. 14301 and 14313 were never isotopically homogenized and therefore do not yield ages. However, trapped argon in these breccias consists of two components, with one component rich in Ar-40 and fractionating at low temperatures during stepwise heating experiments.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar Science Conference; Mar 18, 1974 - Mar 22, 1974; Houston, TX
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 7
    facet.materialart.
    Unknown
    Ar-40/Ar-39 ages and trace element contents of Apollo 14 breccias - An interlaboratory cross-calibration of Ar-40/Ar-39 standards (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Rare gas data are presented from step-wise heatings of lunar breccias 14066 and 14318 and from an interlaboratory cross-calibration of five standards used in Ar-40/Ar-39 dating. While different in detail, the Ar release patterns in the four samples yield indistinguishable plateau ages of 3.93 plus or minus 0.03 b.y. and above 400 C total ages of 3.87 plus or minus 0.06 b.y. Concentrations of K, Ca, Ba, Br, U and I are given for 14318 and 14066. We also present an updating of all of the Ar-40/Ar-39 ages and trace element concentrations previously published by this laboratory.
    Keywords: CHEMISTRY
    Type: Geochimica et Cosmochimica Acta; 38; June 197
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 8
    facet.materialart.
    Unknown
    Rare-gas analyses on neutron irradiated Apollo 12 samples. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Argon, krypton, and xenon from stepwise heating of five Apollo 12 rocks that had been irradiated to a neutron fluence of about 10 to the 19th neutrons/sq cm were analyzed mass-spectrometrically. The Ar40-Ar39 ages were determined and range from 3.18 plus or minus 0.06 x 10 to the 9th years to 3.32 plus or minus 0.06 x 10 to the 9th years. Trace elements Ba, Br, I, and U were measured via the neutron-induced reactions that produce isotopes of krypton and xenon. The following concentration ranges were observed: Ba, 46 to 70 ppm; Br, 48 to 146 ppb; I, 16 to 73 ppb; and U, 170 to 247 ppb.
    Keywords: SPACE SCIENCES
    Type: Lunar Science Conference; Jan 10, 1972 - Jan 13, 1972; Houston, TX
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 9
    facet.materialart.
    Unknown
    Isotopic studies in returned lunar samples (1971)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Analysis of lunar soil samples returned by Apollo 11 and 12 flights are discussed. Isotopic studies of the rare gases from Apollo 11 flight lunar samples are presented. The lunar soil analyses indicated the following: (1) high concentrations of solar wind rare gases, (2) isotopic match between solar wind gases and gas components in gas-rich meteorites, and (3) rare gases attributable to spallation reactions induced in heavier nuclides by cosmic ray particles.
    Keywords: SPACE SCIENCES
    Type: NASA-CR-115305
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 10
    facet.materialart.
    Unknown
    Spallogenic Ne, Kr, and Xe from a depth study of 12002 (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Isotopic abundances and concentrations of spallogenic Ne, Kr and Xe in Apollo 12 rock 12002, constructing three stage model of irradiation history
    Keywords: SPACE SCIENCES
    Type: LUNAR SCIENCE CONFERENCE; Jan 11, 1971 - Jan 14, 1971; HOUSTON, TX
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...