Search Results - "Apollo
-
1
Numerical Simulations of the Apollo S-IVB Artificial Impacts on the Moon
Published 2021“…The third stage of the Saturn IV rocket used in the five Apollo missions made craters on the Moon ∼30 m in diameter. …”
Get full text
Get full text
-
2
Res publica constituta : Actium, Apollo and the accomplishment of the triumviral assignment
Published 2008“…It will be stressed that, according to the regime, Apollo had a major role to play in this development, helping Octavian to win the battle of Actium. …”
Get full text
-
3
U-Pb Ages and Compositions of Apollo 14 Regolith Glasses
Published 2013“…U-Pb compositions of Apollo 14 impact glasses suggests two prominent age groups at 3.7 Ga and less than 1 Ga, with smaller clusters at 2.5 Ga and 1.3 Ga. …”
Get full text
Get full text
-
4
-
5
Annealing history of zircons from Apollo 14083 and 14303 impact breccias
Published 2018“…Breccia boulders scattered around the 25 Ma Cone Crater near the Apollo 14 landing site provide a potential source of material ejected from the underlying Fra Mauro formation, which is interpreted to form from the ejecta blanket of the ~3.9 Ga Imbrium impact. …”
Get full text
-
6
Terrestrial-like zircon in a clast from an Apollo 14 breccia
Published 2019“…A felsite clast in lunar breccia Apollo sample 14321, which has been interpreted as Imbrium ejecta, has petrographic and chemical features that are consistent with formation conditions commonly assigned to both lunar and terrestrial environments. …”
Get full text
-
7
-
8
Pb-Pb ages of feldspathic clasts in two Apollo 14 breccia samples
Published 2017“…© 2017 Elsevier Ltd Pb-Pb isochron ages of ca. 3.92 Ga for three K-feldspar-rich clasts from Apollo 14 breccias 14303 and 14083 were determined using Secondary Ion Mass Spectrometry (SIMS). …”
Get full text
-
9
-
10
An inquiry into the lunar interior: A nonlinear inversion of the Apollo lunar seismic data
Published 2002“…This study discusses in detail the inversion of the Apollo lunar seismic data and the question of how to analyze the results. …”
Get full text
Get full text
-
11
The Moon Zoo citizen science project: preliminary results for the Apollo 17 landing site
Published 2016“…We have tested various methodologies and parameters therein to interrogate and reduce the Moon Zoo crater location and size dataset against a validated expert survey. We chose the Apollo 17 region as a test area since it offers a broad range of cratered terrains, including secondary-rich areas, older maria, and uplands. …”
Get full text
-
12
Impact history of the Apollo 17 landing site revealed by U-Pb SIMS ages
Published 2017“…Secondary ion mass spectrometry (SIMS) U-Pb ages of Ca-phosphates from four texturally distinct breccia samples (72255, 76055, 76015, 76215) collected at the Apollo 17 landing site were obtained in an attempt to identify whether they represent a single or several impact event(s). …”
Get full text
-
13
-
14
Impact cutoff frequency: Momentum scaling law inverted from Apollo seismic data
Published 2015“…We perform the analysis of both long and short period data for 40 large meteoroid impacts event gathered by the Apollo lunar seismic network. We extract the linear momentum released by the impact and the cutoff frequency of the recorded seismic spectrum, related to the radiation process of the shock wave generated by the impact. …”
Get full text
-
15
Apollo 12 breccia 12013: Impact-induced partial Pb loss in zircon and its implications for lunar geochronology
Published 2018“…Apollo 12 breccia 12013 is composed of two portions, one grey in colour, the other black. …”
Get full text
-
16
Annealing of radiation damage in zircons from Apollo 14 impact breccia 14311: Implications for the thermal history of the breccia
Published 2016“…Impact breccia 14311, was collected from the Apollo 14 landing site as a potential sample of the underlying Fra Mauro Formation. …”
Get full text
-
17
SIMS U–Pb study of zircon from Apollo 14 and 17 breccias: Implications for the evolution of lunar KREEP
Published 2008“…The age distributions of zircons from breccias from both the Apollo 14 and Apollo 17 landing sites are essentially identical in the range 4.35–4.20 Ga. …”
Get full text
-
18
High resolution U-Pb ages of Ca-phosphates in Apollo 14 breccias: Implications for the age of the Imbrium impact
Published 2014“…This suggests that several impacts occurred during a 20–30 Ma period around 3900 Ma and formed breccias sampled by the Apollo missions.…”
Get full text
-
19
Constraining the timing and sources of volcanism at the Apollo 12 landing site using new Pb isotopic compositions and crystallisation ages
Published 2018“…The basaltic suites collected at the Apollo 12 landing site have been interpreted as representing a stratigraphic sequence of volcanic flows emplaced in the Oceanus Procellarum region between approximately 3100–3300 Ma. …”
Get full text
-
20
Phosphate ages in Apollo 14 breccias: Resolving multiple impact events with high precision U-Pb SIMS analyses
Published 2016“…The U-Pb systems of apatite and merrillite grains within four separate Apollo 14 impact melt breccia samples were analysed by secondary ion mass spectrometry. …”
Get full text