Science
 2013
DOI: 10.1126/science.1240971
|Get access via publisher |Summarize |Cite
|
Sign up to set email alerts

Nitrogen Isotopic Composition and Density of the Archean Atmosphere

Bernard Marty1,
Laurent Zimmermann2,
Magali Pujol3
et al.

Abstract: Understanding the atmosphere's composition during the Archean eon is a fundamental issue to unravel ancient environmental conditions. We show from the analysis of nitrogen and argon isotopes in fluid inclusions trapped in 3.0-3.5 Ga hydrothermal quartz that the PN2 of the Archean atmosphere was lower than 1.1 bar, possibly as low as 0.5 bar, and had a nitrogen isotopic composition comparable to the present-day one. These results imply that dinitrogen did not play a significant role in the thermal budget of the… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
171
20
11
10

Citation Types

11
169
1
0

Year Published

2005
2005
2026
2026

Publication Types

Select...
159
25
9
8

Relationship

5
196

Authors

Journals

citations

Cited by 198 publications

(181 citation statements)
references

References 39 publications

11
169
1
0
Order By: Relevance
“…3). In the case of residual N 2 , we match the lower N 2 value of 0.5 bar at 3.5–3.0 Gyr ago derived from proxy data in the work of Marty et al (2013), although our results are slightly higher than the value derived for the total atmospheric pressure at 2.7 Gyr. Generally, scenarios with nitrogen escape can be neglected since the resulting N 2 partial pressures do not match the proxy data.…”
Section: Results and Analysissupporting
confidence: 88%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…3). In the case of residual N 2 , we match the lower N 2 value of 0.5 bar at 3.5–3.0 Gyr ago derived from proxy data in the work of Marty et al (2013), although our results are slightly higher than the value derived for the total atmospheric pressure at 2.7 Gyr. Generally, scenarios with nitrogen escape can be neglected since the resulting N 2 partial pressures do not match the proxy data.…”
Section: Results and Analysissupporting
confidence: 88%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“… Nominal run but with low starting atmospheric mass, 5% starting N in the atmosphere, constant net subduction (10%), and high (50 Sv) hydrothermal circulation. These conditions lead to a model realization consistent with previous estimates of a 1 PAN atmosphere at 3.46 Ga (Marty et al, ) and 0.5 PAN at 2.7 Ga (Som et al, ).…”
Section: Resultssupporting
confidence: 88%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…Hence, the model includes the four key absorbers identified in the previous section. The nitrogen partial pressures adopted in the model are consistent with the constraints measured by Marty et al (2013) for the 3.5 Ga Earth. The high CO 2 abundance relative to the present day is consistent with an atmosphere dominated by volcanic outgassing.…”
Section: Resultssupporting
confidence: 84%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
scite logo

Scite is an AI-powered platform that helps researchers discover and evaluate scientific literature through Smart Citations, showing whether studies support or contradict a claim. Now part of Research Solutions, Scite has indexed 1.6B+ citations, partners with 30+ publishers, and serves 2M users worldwide.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Status

Copyright © 2026 Scite LLC. All rights reserved.

Made with 💙 for researchers

Part of the Research Solutions Family.

Research Solutions Logo