# Curiosity Rover Prepares for Nazca Drill Campaign

NASA's Curiosity rover targets crystal-rich rock formations for deep compositional analysis on Mars.

- **Source:** [NASA](https://www.nasa.gov)
- **Published:** 2026-10-28
- **Topic:** [Business](https://brifing.si/c/business)
- **Original article:** <https://science.nasa.gov/blog/curiosity-blog-sols-5043-5049-preparing-to-drill-at-nazca/>
- **On Brifing:** https://brifing.si/s/40c6892d-3503-4939-af24-e5dab3be6f25

## Targeting the Nazca Site

Following the Basque Lakes campaign, the Curiosity rover identified a promising drill target named Nazca. Located near the Chiu Chiu block, this site features a high density of disc-shaped crystal forms. The team confirmed this target after reviewing post-drive imaging, prioritizing it for detailed geological investigation and surface drilling operations.

## Hypothesizing Crystal Origins

Scientists hypothesize that the observed disc and needle textures represent original crystal forms. These shapes provide critical data regarding historical temperatures and fluid availability on Mars. However, researchers remain cautious, noting that these structures might be pseudomorphs, where original minerals were replaced by different compositions over long geological time scales.

## Advanced Imaging Techniques

The Mars Hand Lens Imager (MAHLI) is being utilized to generate high-resolution three-dimensional relief models. By capturing five overlapping images at varying geometries and doubling focus mechanism steps, the team aims to characterize the crystal forms with unprecedented detail. This data is essential for understanding the microscopic structure of Martian rocks.

## Deep Compositional Profiling

The ChemCam LIBS instrument is performing a specialized depth profile experiment on the Toucan target. By concentrating 150 laser shots on a single spot, the team expects to penetrate five times deeper than standard procedures. This method allows researchers to compare surface-level composition with the interior material of the crystal forms.

## Pre-Drill Surface Characterization

Before the preload test at Nazca, the team is deploying the LIBS, DRT, and APXS instruments to map surface composition thoroughly. These instruments work in tandem to ensure the site is fully characterized. This rigorous preparation phase minimizes risks during the actual drilling process and maximizes the scientific return from the sample.

## Atmospheric Cloud Observations

As the Martian twilight cloud season begins, the mission is capturing nighttime images of Phobos. By observing sunlight reflecting off the moon, the team can estimate particle sizes within high-altitude carbon dioxide clouds. This environmental monitoring provides context for the atmospheric conditions currently present at the rover's location on Mount Sharp.

## Operational Planning Dynamics

Planning for these operations involves complex coordination between geology and mineralogy teams. Decisions are made based on post-drive imagery, requiring rapid assessment to maintain mission momentum. The transition from the Basque Lakes campaign to Nazca demonstrates the iterative nature of rover operations, where every drive informs the next scientific objective.

## Scientific Significance of Findings

The investigation at Nazca represents a critical effort to decode the environmental history of Mars. By combining structural analysis of crystal forms with deep chemical profiling, the mission seeks to distinguish between primary and secondary mineral growth. These findings are vital for understanding the planet's past habitability and long-term geological evolution.

## Sources covering this story

- https://science.nasa.gov/blog/curiosity-blog-sols-5043-5049-preparing-to-drill-at-nazca/ — 

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_Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._